Hello, I've had these same problems after updating to 20H2 in early 2021. I know something has broken after new update are installed when;
- After turning on or rebooting my PC and logging on, i quickly open Task Manager, sort by CPU top processes and watch for "Windows Problem Reporter" if this comes up, generally means that my startup services or programs have failed to startup and crash constantly.
- I am unable to open Event Viewer, after it opens, the wait spinner comes up on the mouse cursor and Event Viewer immediately closes down.
- Attempting to open most programs or applications will result in the program halting and closing down after a few seconds after it being open.
This has been happening since I went to 20H2 and I have found that uninstalling the following KB's fixes these issues (so far)
- KB5000802 (I think either KB5001649 or KB461554 needed to be uninstalled, so that KB5000802 would re-appear so I could uninstall)
- KB4601319
- KB4601050
It took a bit of searching on the web, but finding articles like this was great, I hope some of the key words below can help others trying to find an article like this if it helps fix the issues;
Program application closes all of a sudden after windows update to 20H2, cant cannot open or get to read Event Viewer doesn't remain open, program randomly shuts down after a few seconds of being open. Cant install program it just closes after being opened, startup programs fail to open or start.
*Update 02/04/2021*
Even after uninstalling the above 3 KB's, I jumped back onto my PC a few days later, only to find the same issues occurring again, then noticed that KB5000802 has been re-installed. I did a bit of research then found that KB5000842 is meant to resolve some of the issues that KB5000802 brings, so I thought id give it ago and install the pending update KB5000842 ... it didn't make any difference, still get the same behaviors as described above.
So I am looking into re-installing the "wushowhide.diagcab" so that I can stop these KB's from being re-downloaded and re-installed every few days/weeks.
Im staying clear of these at the moment;
- KB4601050
- KB4601319
- KB5000802
- KB5000842 (Fyi, this will remove KB5000802 once installed, but when uninstalled, KB5000802 will come back and will need removal again)