This problem tangled me for many days, recovery system also useless, almost re-installed WIN8, now finally solved, you also come to try it!
Model: Taiwan Electric X89 system: Win8.1 with Bing
Failure: When the. NET Framework 3.5 is not installed, the KB2966828 patch is installed, causing the. NET 3.5 installation to fail, causing many software to be unusable
Workaround:
1. After uninstalling patch KB2966828, install. NET 3.5 again
2, for the inability to uninstall the KB2966828 (such as the Tablet PC pre-installed cured this patch of users), see: HTTP://SUPPORT2.MICROSOFT.COM/KB/3005628/ZH-TW
All you need to do is download and reinstall KB2966828 again before installing the. NET Framework 3.5!
32-bit:
Download the Ndpfixit-kb3005628-x86.exe kit now. (Please run with Administrator privileges)
Download the WINDOWS8.1-KB2966828-X86.MSU kit now.
64-bit:
Download the Ndpfixit-kb3005628-x64.exe kit now. (Please run with Administrator privileges)
Download the WINDOWS8.1-KB2966828-X64.MSU kit now.
More exciting, please pay attention to "palm Eye" official website: http://www.guwanch.com
Win8.1 Unable to install the. NET Framework 3.5 Workaround