[SOLVED] KB4486105 (.NET Framework 4.8 Server 2012R2) breaks OS

[thelexnard]

Hi,

After installing KB4486105 on Server 2012R2 it corrupts many of the OS' features such as Server Manager and Event Viewer.

Running a SFC prior to installing the update shows no integrity violations.

After the update I get dozens of errors in CBS referencing the update package.

If I remove the update the server works perfectly fine again. All features normal. Again, SFC shows no violations.

The major issue is that I need .NET 4.8 for Quickbooks Database 2022 on this server.

CBS logs attached.

 

[thelexnard]

A little more info on this.

I definitely corrupted the installation. While 4.8 was installing I performed a hard shutdown on the VM thinking it was frozen (I know...beyond HUGE mistake). The timestamp for this shutdown is ‎February ‎3, ‎2022, ‏‎6:18:xx PM

All of the files in the WinSxS folder with that timestamp are referencing a hash error in the CBS log.

Even though the repair and reinstallation for .NET 4.8 seems to go smoothly it still needs reference to those component files and just craps out.

Am I screwed here? I feel like I am...

 

[thelexnard]

I believe I fixed my issue.

I installed .NET 4.8 successfully on the Hyper-V host (also Server2012R2). I took note of all the packages in the WinSxS folder with the latest timestamp. I took those folders/files and created a SFCFix zip to run with the SFCFix tool. After copying all the good files and overriding the corrupt I was able to install 4.8 again on the problem server. This time all features worked correctly (EventViewer etc.). Quite the experience but I'm glad in the end I learned something and got this resolved without a full reinstall.

This forum was an immense help with solving this issue. I will definitely be donating as an appreciation for having these resources available.

 

[philc43]

Thanks for your kind words and I'm glad you were able to fix this.