HTC Sync and Vista 32 - EVO 4G Q&A, Help & Troubleshooting

Hello everyone
Great forum. Was able to root/nand unlock and flash DC with ease from all of the information here, even with the EVO being my first smartphone. Thank you all.
Now my question is about trying to get the HTC Sync to work with my Windows Vista. I have Home Premium and nothin I have tried is working. The computer sees the HTC and I have tried several drivers, but it will not initialize the driver and HTC Sync won't connect. I can run as a HDD and that works fine, but trying to sync or charge only will not allow me to run CMD tools.
I have the beautiful Scetched Android boot image through using a root file manager, but would like to create a custom splash screen.
And I guess I need to sync to flash.
Any ideas?
Thank you
Criim

Are you running the latest version of the software? Haven't heard any specific issues with Vista 32. Also check that you aren't using any kind of extension cable between your computer and your USB cable. Try another USB port as well.
Here's a link to HTC Sync:
http://www.htc.com/us/support/evo-sprint/downloads/
Edit: Also, just to make sure, you are not using HTC sync to apply a custom boot video right? Cause as far as I know, you don't use it for that. I've never used HTC sync for anything other than the USB drivers for ADB. I thought once you made the video that you applied it via either a ROM image or by uploading it using ADB, HTC SYNC is just a backup/syncing program for the phone.

Sirchuk said:
Are you running the latest version of the software? Haven't heard any specific issues with Vista 32. Also check that you aren't using any kind of extension cable between your computer and your USB cable. Try another USB port as well.
Edit: Also, just to make sure, you are not using HTC sync to apply a custom boot video right? Cause as far as I know, you don't use it for that. I've never used HTC sync for anything other than the USB drivers for ADB. I thought once you made the video that you applied it via either a ROM image or by uploading it using ADB, HTC SYNC is just a backup/syncing program for the phone.
Click to expand...
Click to collapse
It is the USB cable that came with the EVO plugged right into the computer and have tried 2 different slots. I am not really trying for the sync. It is just a good indicator for if the driver is working correctly, which it isn't for some reason.
I just wanted it to connect so I can run commands at the CMD prompt.
I already have the boot video and root/nand unlocked through file managers and the term emu. Now I want to flash a new splash screen, but to do that I think I *have* to flash it from the PC. If you know of a way to do it in some other way, I'd love to hear how.
Going to take a nap, but was thinking about trying to uninstall my AntiVirus, just in case one of the services was screwing with the driver. I had it turned off, but it might have had a service that was still there.
Criim
Edit:
Well I tried unistalling my AVG, rebooting into safe mode to remove any instances of the HTC driver, and then did a fresh install of the above file. Still shows an error in the device manager with my EVO plugged in.
"Windows cannot initialize the device driver for this hardware. (Code 37)"
I even tried to plug it into all 8 of my USB slots just in case.
I'm stumped.
Criim

I'm having the same problem. I just rooted my Evo and now I can't connect to HTC Sync at all. Device manager shows "My HTC" installed properly. Evo connects to pc fine but times out when trying to connect to HTC Sync.
I've tried downgrading to HTC Sync 2.0.31. I'm currently trying with 2.0.40 with same results. Nothing.

Related

HELP!!!!Problem with HTC sync on windows 7

Hi all
i just received my htc desire today
i cant get the phone to work with HTC sync 2.0.25
it tries to connect but each time end up disconnected
ive tried all the htc driver 32 but etc
still nothing
i need it to work with outlook contacts and calendar
soembdy please help!!!
Desire uses 2.0.28 it is on root of SD card
Are you using 64 bit or 32 bit Windows 7?
I had similar issues in 64, and needed to manually place the HTC drivers in the Program Folder.
You can download the HTC x64 Drivers from here:
http ://www.multiupload.com/86L5JXTK0S
Just place them in the HTC directory (i.e. "C:\Program Files (x86)\HTC\" or where ever you choose to install HTC Sync. And then just reinstall the version that is located on the SD Card that came with the Desire.
Hope that helps, it worked for me.
had no issues with my W7 x64 Ultimate laptop and drivers - installed first time using HTCSync on the SD card
kasonne said:
Are you using 64 bit or 32 bit Windows 7?
I had similar issues in 64, and needed to manually place the HTC drivers in the Program Folder.
You can download the HTC x64 Drivers from here:
http ://www.multiupload.com/86L5JXTK0S
Just place them in the HTC directory (i.e. "C:\Program Files (x86)\HTC\" or where ever you choose to install HTC Sync. And then just reinstall the version that is located on the SD Card that came with the Desire.
Hope that helps, it worked for me.
Click to expand...
Click to collapse
Well You probably did not noticed that on the root of SD card is a new version of HTC sync 2.0.28.
So as I wrote, he only need to intall this new version 2.0.28 from SD card. Old version 2.0.25 comes with Legend and is not working with Desire.
in each section of this forum..i find the same question, whoever gets a new phone..come here ask HTC SYNC & WIN7
kinda funny
tickmaster said:
Well You probably did not noticed that on the root of SD card is a new version of HTC sync 2.0.28.
So as I wrote, he only need to intall this new version 2.0.28 from SD card. Old version 2.0.25 comes with Legend and is not working with Desire.
Click to expand...
Click to collapse
No I did notice that and that what I used and if you read point out. I was simply giving a piece of advice that worked for me in with the problem that I had.
It works fine on win7 x64, never tried on 32 but i assume its the same.
I posted a download link if you were like me and a few others whom deleted it by mistake. I was lucky i have two HTC Desires so fished the software of the other SD:
http://forum.xda-developers.com/showthread.php?t=661397
When you install the software it asks to restart i think, you dont realyl need to do this. When you connect your phone it will detect device etc, install drivers. Once done disconnect the phone from computer for a second o two and then reconnect it, this time the HTC sync should appear on your phone. IF you do not select htc sync it will not appear as connected in the htc sync software.
Thanks for the driver link, i didn't find them on the htc site, well i thought win7 would download them automatically just like any other device i've connected to it.
w/e now i can use my outlook contacts and calendar thanks again.
EDIT:
Don't know with older versions but with latest HTC Sync 2.0.28 that's in your phone SD you don't need those drivers.
On my Windows 7 64bit when i plugged the phone a driver installation error pop'd, so i removed the sd card, inserted it in a card reader, copy'd the app on my pc and installed the htc app manually. After the installation i tried again but windows gave me the same driver error, so i just started from scratch.
Unistalled htc sync, reboot, reinstalled it, reboot, plugged in the phone in htc sync and it worked
So probably you've to first install HTC Sync then plug the phone in HTC Sync mode to get it installed correctly.
EDIT 2:
Ok nothing again...
After the first sync i unplugged the phone, now if i try to replug it i get the same driver error and the device can't be recognized. Meh i really don't know what to do.
EDIT 3:
This just sounds retarded, i plugged the htc cable directly on the back of my pc w/o using an extension cable and now it works flawlessly. Gonna play around with it more to see if that's really the problem.
hTC Sync PC Connection Issues
hTC Sync PC Connection Issues
If your hTC device (mines the new hTC Desire “Bravo”)
has connection issues with your PC – You will receive an
error message on you hTC device saying PC not found etc.
Simply check to see if you have your hTC device plugged
into a USB2 port and not the older USB1.1 port … Vista+
should have atleast 1 / 2 USB2 ports. I have 8 ports on the
rear of my PC and 2 on the front. I had connection issues,
but discovered the 2 ports on the front are USB1.1 and
norrowed down the USB2 port which was on the rear of my
PC! Plug your hTC device cable into the USB2 port (may
need trial & error to find the port, but you can check to see
if you have a USB2 port, by looking in your
DEVICE MANAGER on your PC. Open the hTC Sync
programme and then plug the cable into your phone. Select
hTC Sync on your device to do a Sync or select Disk Drive
on your device to transfer music, pics, etc. Any problems
feel free to contact me @ [email protected]
Press F8 when you start windows
Select the option that alows 3rd party drivers
and then let it boot into windows...
I think once you are in there is an option to allow 3rd party drivers.
Evan if teh drivers are from microsoft win 7 will do the same thing... odd but It's theer for a reason !
Sorry I hope this is not off topic and I don't want to hijack the thread but the people using laptops can they check if the laptop will go into hibernation mode with HTC sync installed. My XP netbook wont hibernate and I have to uninstall it after every time I use it, just want to check if it is a driver conflict with my netbook or a generic problem with HTC Sync.
Hey, glad I found this thread. I have been having trouble with HTC Sync from the outset. I have an unmodified Evo with 2.2 and an Asus netbook with Windows7 Starter. I was wondering if it might be the W7 Starter being limited in some way, but it sounds like the problem is across the board. I have managed to sync a couple of times but the phone and computer don't seem to recognize each other reliably. Right now the only thing the phone will do is accept a charge from the computer. Occasionally the computer will recognize the phone enough to install the driver but that's it. Anybody have any new news on this one?
Install HTC Sync 3.0.5387.
Works VERY good!
TheDeadCpu said:
Install HTC Sync 3.0.5387.
Works VERY good!
Click to expand...
Click to collapse
+1 for this one. No issues at all even HTC says Desire is not supported but it works well. Tested iTunes sync and application installation.
TheDeadCpu said:
Install HTC Sync 3.0.5387.
Works VERY good!
Click to expand...
Click to collapse
I have still a problem updating the drivers and get the sync to work. :s Been trying all day. Windows 7 64 bit here

HTC Sync won't recognize my Desire?

Just got a Desire, had a Hero before. With the Hero HTC Sync found the phone, but with the Desire it just stays disconnected, and after the Phone has finished searching for HTC Sync a message pops up saying it didn't find it. So anyone know how to fix this? Running latest HTC Sync 2.0.33.
Am able to open cmd and type:
Code:
cd\
cd AndroidSDK\tools\
adb devices
And it list a serialnumber for the phone while the Phone is in HTC Sync mode. But still haven't got HTC Sync to find my phone.
Got Windows 7 Ultimate 64bit.
Thanks in advance.
i had to uninstall and re-install HTC sync after changing the ROM, to get it to pick up my desire again. have you tried that?
Did a reinstall, though also plugged the phone into another USB port, worked now. Though ofc not sure if it was the reinstall or other USB port that helped, but anyway thanks.
Remove your old devices in your htc sync and reconnect, if that doesnt work you may need to restart your machine (maybe even device) ive had it a few times after flashing a few roms.
I just down loaded HTC sync from new and it does not reconise my desire either. It is flashed with frost 9d. Will that make a difference??
duryard said:
I just down loaded HTC sync from new and it does not reconise my desire either. It is flashed with frost 9d. Will that make a difference??
Click to expand...
Click to collapse
...
Yes. No Sense, no sync, no way. Pick between Sync and Froyo ROMs.
Hello,
I run into the same issue: HTC Sync doesn't recognize my Desire.
I have Windows 7 32 bit OS. I installed HTC Sync v 2.0.33 and the drivers included in the package. Then I plugged my Desire and selected the HTC Sync mode. It worked for 2 mins, then it has disconnected. I unplugged, plugged, ... and now, it keeps displaying : Can't find HTC Sync on your PC.
Then, I uninstalled and reinstalled the drivers, and it worked in the same way: disconnected after 2 minutes. I also tried to plug the phone in another USB port, without any success.
Does sb have any idea to fix this ?
Julien.
Mine is the same - it's never been recognised, either when stock or after rooting and flashing. Tried 2 versions of HTC Sync, rebooting, reinstalling. I have now given up.
Does your OS detect the device is connected when you connect it via usb in htc sync mode or even in usb storage mode?
Same problem. Not ROM Related, but USB port related
I had the same problem.
After flashing a new ROM (R4_Evil_D with AS2D) to my device, I had no problem with HTC Sync.
After Update to HTC Sync v2.0.33, it stopped recognising my HTC Desire.
Tried everything, but plugging it into another USB port fixed it for me.
Hope this helps.
I hope this question will fit this thread. I've noticed a new app in apps list on my phone. It is listed in "downloads" tab and is called "HTC Sync". The problem is i didn't download it, but it appears in downloaded apps section. How could this be? Even more pressing on it i have an option to uninstall it. I know it's a silly question, because there is no real alert about the device, but i would like to know everything about the device and especially about things, that are going on inside without my "authorization" if could name it like that. Anyway, what is this app and what is it for and what happens if i uninstall it, because it isn't listed in the marked to reinstall it...
Thanks in advance!
Proximer said:
I hope this question will fit this thread. I've noticed a new app in apps list on my phone. It is listed in "downloads" tab and is called "HTC Sync". The problem is i didn't download it, but it appears in downloaded apps section. How could this be? Even more pressing on it i have an option to uninstall it. I know it's a silly question, because there is no real alert about the device, but i would like to know everything about the device and especially about things, that are going on inside without my "authorization" if could name it like that. Anyway, what is this app and what is it for and what happens if i uninstall it, because it isn't listed in the marked to reinstall it...
Thanks in advance!
Click to expand...
Click to collapse
Bump for my question.

Upgraded to Froyo now USB won't Work

I just updated my already rooted Evo from 2.1update 1 to 2.2 using the HTC-OTA-3.26.651.6-Final-Froyo-Rooted-Odexed-netarchy-signed4.zip
Now after update, everything but the USB works. I've uninstalled the HTC sync and drivers programs, reinstalled them, turned off and on USB debugging, and even went in to recovery mode and rebooted the device.
What am I missing?
John Berry
Same thing happened to me. I actually ended up using a different computer that had never had HTC sync installed on it. Then I did a complete wipe and then rebooted. Worked fine after that.
Sent from my PC36100 using XDA App
I've seen this happening to several people recently. Try uninstalling HTC sync on your PC. Install the Android SDK and download the USB drivers as instructed. Plugin your phone and open device manager on your PC and look for the item that has a yellow exclamation point next to Android device. Right-click the item and select update drivers and proceed to manually install the drivers from the ones downloaded from the Android SDK (there is tutorial on the website with screenshots).
Hopefully that works. I'm not entirely sure why this is happening to so many that have recently rooted 2.2.
Sent from my PC36100 using XDA App
Same thing happened to me and I reflashed the mtd and it worked. Im a bit buzzed right now but if u want let me know and ill post a link where it shows how to fix the prob
cubanjinx said:
...I reflashed the mtd and it worked...
Click to expand...
Click to collapse
QUOTE-"Then I did a complete wipe and then rebooted."
Okay, I'm a little confused what do you mean by "reflash the MTD", and Tiffany84, what did you wipe and reboot, the PC or the Evo?
Does anyone know the fix for this, as I have two PC's (an XP and WIN7) that have the problem of loosing USB connection and then one that I used to use that still has HTC Sync 2.4 that does work.
This seems like a driver version issue. What's the fix????????
Solution Found - But Still Have Questions
So I Moved the USB cable to a USB port that had never been used for the EVO, it was originally used for the keyboard.
I uninstalled the HTC Sync software and the HTC driver package (that's installed the with HTC Sync), and I deleted a couple of folders with drivers I'd downloaded just to be safe.
I then swapped the USB keyboard with the EVO plug, and the the XP machine loaded the ADB drivers and recognized the EVO as a removable drive. So it seems to be working.
However, there seems to be a bug in the update process that's affecting the USB driver. So I hope and pray someone will identify the problem and come up with a solution.

[Q] EVO Unrecognized - WTF??

Guys, I need a little help here. I've rooted my share of phones, and even some tablets, but the Evo i bought a few days ago has been a nightmare.
For some reason, and I can't tell why, this thing will not be recognized by Windows.
It always shows up as "Unknown Device" under the USB catagory on Device Manager.
I've tried different OS versions (Windows 7 64Bit, Vista 64bit, Even Mac). I've also pulled down every form of driver I can think of (SDK Orginal version, HTC Sync, Hboot Versions, etc.)
I just cannot get this thing to be recognized. And if I manually try to update the driver and point it to one that I've downloaded, Windows tells me that the most current driver is already installed.
The bottom line is that I need to be able to connect to the phone from the comp in order to push stuff via ADB and throw commands at it. The same unknown device situation happens when the phone is in bootloader or actually booted into Stock Froyo (2.2)
Has anyone ever seen anything like this? I know i haven't, and it's buggin me out.
buster3845 said:
Guys, I need a little help here. I've rooted my share of phones, and even some tablets, but the Evo i bought a few days ago has been a nightmare.
For some reason, and I can't tell why, this thing will not be recognized by Windows.
It always shows up as "Unknown Device" under the USB catagory on Device Manager.
I've tried different OS versions (Windows 7 64Bit, Vista 64bit, Even Mac). I've also pulled down every form of driver I can think of (SDK Orginal version, HTC Sync, Hboot Versions, etc.)
I just cannot get this thing to be recognized. And if I manually try to update the driver and point it to one that I've downloaded, Windows tells me that the most current driver is already installed.
The bottom line is that I need to be able to connect to the phone from the comp in order to push stuff via ADB and throw commands at it. The same unknown device situation happens when the phone is in bootloader or actually booted into Stock Froyo (2.2)
Has anyone ever seen anything like this? I know i haven't, and it's buggin me out.
Click to expand...
Click to collapse
I've never seen that before. Wish I had something for ya. Is the Evo brand new or used? Are you sure the usb cable is good? I've seen a bad cable cause some headaches before. Wish I had more for ya, sorry man.
Sent from my PC36100 using XDA App
EVO is not new. I bough it from cragslist a few days ago. It seems to work fine otherwise. Not rooted for sure, and running Sprint original 2.2.
I did try a couple of different USB cables just to be sure, and had the same results.
The funny thing is that even though I was never able to get it "recognized" on any of my machines, I was able to get ADB so "see" it for a while. I started the rooting process by pushing files to it via ADB and even sent a reboot command to it.
Once it rebooted, that's when it all went bad. It was still showing as unrecognized (just like before), but now ADB can't see it at all. Keeps telling me no devices are connected.
Even my friend's Mac Air (which supposedly doesn't need any kind of drivers to see the phone) can't see it either.
It's just weird...
perform a hard reset, maybe a rogue app or setting got messed up,
fastboot screen>clear storage>yes
Tried that as well. Sorry i didn't mention it in the original post.
I think I've pretty much tried everything that's somewhat logical at this point.
Now I'm looking for the "illogical" ideas.
Make sure usb debugging option is turned on in settings>applications>development and the phone is in charge only mode. Then it should be recognized and you should be able to use adb.
Debugging was turned on already. I made sure of that.
As for the mode of connection I've tried them all with mixed results.
Here's what I've seen so far...
Charge only - unrecognized device in Device manager, and ADB can't see it.
HTC sync - unrecognized device in Device manager, and ADB can't see it.
Disk Drive - unrecognized device in Device manager, and ADB can't see it.
Internet Sharing - never tried it.
Here's the weird part. If i uncheck Debugging and set the phone to HTC Sync, I am sometimes able to get ADB to see it.
This is just confusing...
What happens if you uninstall HTC Sync and just leave the drivers installed? Could work I suppose. I know unrevoked says to make sure you uninstall HTC Sync and install the ADB drivers.
try this. connect your evo to a machine running xp. i had the same problems rooting one evo using windows 7. connected to a machine running xp ,zipped right through without a hitch.
HOPE THIS HELPS YOU IN YOUR QUEST
Thats what I tried on the Vista box.removed HTC sync, and left the HTC drivers.when that failed I removed the drivers too and replaced them with several different ones I found online.none seemed to work.
The strangest part is that all guides seem to say that MAC OS should just see it without any drivers.
I borrowed friends MAC air and it didn't see it either.
I'm not sure which USB drivers you are using, but these work for me. Uninstall the drivers first, then install this. I hope it is legal to put these here and if not I am extremely sorry.
PS you could try a Linux Live CD and it will see it without drivers or go with Wubi which installs Ubuntu on your Windows hard drive and can be uninstalled just like any other program. It gives you the option to boot into Ubuntu or Windows on bootup. Neat little program and it is faster than using the live CD. Go to this link Wubi and click the Start Download button to download Wubi.
Those seem to be the same drivers I've tried (well those and a ton of others as well).
I'm gonna give that LiveCD idea a shot. Burning it now.
If not, I'm gonna try to find an XP machine somewhere.
I've got a couple of VM's on my machine running XP, but since the main Win7 Machine doesn't see it, it can't seem to pass the USB connection over to the XP VM.
Man, I have to say, this is just the most complicated rooting process I've ever seen. If this was my first root attempt, I'm pretty sure I'd leave Android forever
It usually is a painless operation to root the Evo. For some reason you are having a difficult time with driver installation. It seriously has to be something simple that has been missed, because I have rooted mine and several friends Evo's and it was very easy. I had a MyTouch 3g 3.5mm before this Evo and talk about a pain. Before the Universal Auto root app you had to make a gold card first and that in itself took over an hour. It was my first root and it was very difficult and time consuming, so to see how easy the Evo was no matter which way I do it made me very happy.
buster3845 said:
Thats what I tried on the Vista box.removed HTC sync, and left the HTC drivers.when that failed I removed the drivers too and replaced them with several different ones I found online.none seemed to work.
The strangest part is that all guides seem to say that MAC OS should just see it without any drivers.
I borrowed friends MAC air and it didn't see it either.
Click to expand...
Click to collapse
yes the mac doesn't require additonal drivers to run adb however u need to make sure the directory is properly set in terminal so adb knows where to pull commands from... on windows did u try uninstalling everything phone related? SDK, HTC Sync, the whole nine yards then try reinstalling only the sdk and the usb drivers? I know with the lastest SDK the usb driver is not included for some reason or at least it wasn't with mine... then one day my adb just randomly stopped working and a uninstall/reinstall cleared up everything... try this usb driver and see where it gets u. Don't know if it's any different that wat the guy above posted but worth a shot. Reinstall the appropriate SDK first then i would recommend plugging the evo into the pc with no usb drivers installed then when it cant automatically find the drivers direct it to the file u downloaded and it should pull the necessary drivers from there and see if that does the trick...
View attachment android-usb-driver.zip
No dice so far guys...but i have made progress in identifying the issue (sort of).
So here's the deal - the ONLY way the phone is recognized is if i toggle the "debugging" setting.
If i plug the phone in with the switch set on (meaning USB Debugging enabled) the phone is not recognized. Pointing the unknown device to the drivers (any drivers) does nothing.
However, if i plug the phone in with the switch set off, it finds a usb mass storage device. Then i turn the debugging switch on, and it finds the ADB Android phone with no issues. Then i can push commands via ADB without any problems.
The problem i have is that I cannot toggle that switch if i boot into HBOOT menu. So the comp never see's the phone.
I've tried this experiment on Win7-64bit, Vista-64bit, XP 32bit, and even MAC.
The same situation seems to apply everywhere, and with all of the drivers I've tried. None of them seem to allow the phone to be plugged in and automatically be found. The only way for the comp to see the phone is if i toggle the debugging switch off, then on.
At this point, I'm ready to put out a bounty on this. $20 via PayPal to anyone who can walk me through it. Bottom line is that I need to be able to see the phone without having to toggle the debugging switch. That will allow me to boot into HBOOT and still send commands to the phone via ADB.
Thanks for all the help guys. Hopefully, we can get this resolved.
**BUMP**
Anyone care to take a shot??

[Q] HTC DESIRE 816 USB driver problem

Hi, My HTC Desire 816 is about 2 weeks old. I've had problems connecting the device to my personal computer (running Windows 7). I've reinstalled HTC Sync Manager several times, turned on USB Debugging, and even switched cables and ports but to no avail. When I try to update the driver, Windows faces an error saying it's unauthorized to install the driver for the device. However, the device connects perfectly to my office laptop also running Windows 7. I am able to transfer files on that system but not on my personal computer. The HTC website also has been of no help, except for asking to reinstall HTC Sync Manager. Please help. Thank You.
me too, need help
Tethering & Internet Pass Through
I have installed the latest version of HTC Sync Manager for my Desire 816 on Windows 7 and tried it on Windows XP as well.
When I connect my device for the first time after that,the drivers install automatically.
My system is recognizing the phone as a mass storage device.
But when I select the 'Internet pass through' connection type, it doesnt connect and after some time gives the error as
"Either you dont have the latest HTC drivers or ,,,,,,,,,,,,,,please get latest drivers by intalling latest HTC sync manger from the website"
I have tried to uninstall and re-install the HTC sync manager several times but had no success with Internet Pass through.
Might be the issue with the drivers,cant understand the reason.
Can anyone help me out with this.
I have also the same problem.
StarKnife said:
Hi, My HTC Desire 816 is about 2 weeks old. I've had problems connecting the device to my personal computer (running Windows 7). I've reinstalled HTC Sync Manager several times, turned on USB Debugging, and even switched cables and ports but to no avail. When I try to update the driver, Windows faces an error saying it's unauthorized to install the driver for the device. However, the device connects perfectly to my office laptop also running Windows 7. I am able to transfer files on that system but not on my personal computer. The HTC website also has been of no help, except for asking to reinstall HTC Sync Manager. Please help. Thank You.
Click to expand...
Click to collapse
I am pretty sure that you guys have already tried all those, but just wanted to remind you all again as a benefit of doubt. HTC sync manager will install the required drivers usually, but in some cases due to firewall or any antivirus systems within our computer, only few files will get installed and other will get blocked. The best way to tackle this problem is to follow the below steps
1. Uninstall the HTC related drivers if installed partially previously.
2. Reboot the system - which is must
3. Then turn of your firewall or internet security or antivirus on your computer for 10 min or more
4. Connect the HTC 816 to computer using the different USB port that is not used before. (Every new USB port needs installing drivers. So hopefully this might help)
5. Install the HTC sync manager
Hopefully it should recognise. If not, try following the same steps with different USB cable.
Hit thanks if I helped you so that I will know the above steps worked for you guys too as they did work for me personally. All the best.

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