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I have a problem installing TeamViewer 12 on windows 10, I tried many ways but still got same problem.
I'm willing to give 0.005 BTC who will help me solve this problem.
Delete it completely and reinstall from link:
https://www.teamviewer.com/hr/?pid=google.tv.teamviewer_exact_tv12.s.int&gclid=CNzxmvG_iNICFQ5mGwodPpMA7w.
Choose Personal (Non-commercial use).
When you don't use your any software for a while they become corrupt even you don't make any changes to them!
It's just because of some temporary file coming from the internet that corrupts the software!
You have to completely uninstall the software from Uninstalling a program utility in Control Panel,
After that go to your Program Files x86 folder and search for "TeamViewer" folder and remove it. Reboot your PC.
Now again download fresh updated version of TeamViewer and install it, again reboot your system and try it!