Why isn't Google Play updating my apps?

Hello. I own a HTC Sense 4+ with the Android Version 4.1.1. For one week now, I haven't been able to update my applications.

This is what happens: Google informs me I have 16 updates to make. I normally do this one by one, but this time, doig that separately or at the same time doesn't work anyway, as it stays for hours in the "downloading" phase (WHEN it gets to that). After those hours, normally one to two, Google Plays informs that update couldn't be done due to an internal error.

Here is what i have done: i searched in a few forums for solutions, and i ended up clearing play, gplayservices caches + data. I even uninstalled all updates. Gplay self updated and is working, until i try to update again where I get, again, the same behaviour.

Can anyone help me on this?

Welcome to Android Central! What's the actual phone model? Sense is the name of the user interface.

Try going to Settings>Apps>All​, select Download Manager, and Clear Cache/Clear Data. Now try again.

Well...this phone was given to me out of the box (bought in europe) but has always worked super well. I'll try to look for the model.

In the meanwhile, I have tried for the last hours to clear data and cache on the download manager, but it,s "computing" for hours now... :(

I am a silly woman. I found the model name its "HTC One S"

It shouldn't take that long. Try wiping the cache partition, which won't erase any personal data. https://support.t-mobile.com/docs/DOC-14110

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There is a step where you need to press the volume up+power button (the so called red triangle screen), and my phone isn't going past that step. Buttons flash, I release the buttons, nothing happens. I ended up holding till forever and the phone restarted after 10 seconds.

It can be a tricky button combo. When you see that screen, first press and hold Power, then press Volume Up, then release both at the same time. The whole combination should take about half a second.

Did not work unfortunately...

Ok, try pressing and holding Vol Up first, then pressing Power, then releasing both.

Tried. Also didn't work...

Hmm, not sure what to tell you. The button combo can sometimes be very tricky. Keep trying, with various timing of the button presses.

Nothing. It didnt work.

In that case, you may want to consider a factory data reset (after backing up or syncing all of your data, of course).

...:( dear me...ok. I'll try that. I just never synced or backed up before how can I do that in a simple and effective way? Given that my desktop software for the phone never got installed (due to unknow errors).

Are all of your contacts associated with your Google account? If you go to your Google Contacts webpage, do you see all of your contacts from the phone there? If so, then they're synced. The same goes for Calendar events--if the events are in a calendar associated with your Google account (as opposed to the Phone account), then they sync automatically with the cloud.

For most other apps, you can back up their data using Helium.

Yes I do have most of my contacts on my google account. Helium might not be an option though, since it requires a download from android...and google play is not working.

Hmm, that's a problem. I checked Amazon Appstore, and they don't have it. Sorry, I'm not sure what else to suggest about backing up app data. Check out this article, and see if any of those backup apps are available in non-Google Play app stores: http://www.tomsguide.com/us/pictures-story/633-4-best-android-backup-apps.html