Windows 10: .NET Framework 3.5 and 4.8 for Windows 11 for x64

With the May update to .NET Framework 3.5 and 4.8 for Windows 11 for x64, I have at least 4 apps that no longer run on my computer:1. KeePass2. Bing Wallpaper3 Logitech Options4. APC Power ChuteDoes anyone here also have a similar problem?Does anyone here know what I can do to "fix" this problem?Thanks

:)

 

KB4586876 Cumulative Update .NET Framework 3.5, 4.8 Windows 10 Jan. 12 Win Update

Hi Denis:
Thank you for your detailed instructions!! This will probably take several days & I'll keep you updated.

I did steps 1 & 2. This installed more updates than I could count...something like 20-30. However, KB4586876 was not listed. Unfortunately, I had to undo several things (I now remember why I didn't update all MS products). I have Word, Excel, & Access from 2003, as well as Word & Access 2016. Updating MS products caused a "file validation" problem whenver I opened a .doc file. I fixed that (with a registry hack). However, it did something to Word 2016, where all my .doc & .docx files were opened by Word 2003 & Word 2016 wasn't an option under "Open with...". I ended up restoring everything from Macrium Reflect.

I will now start with step 3.2.

- - - Updated - - -

Thank you. After checking again, my settings are the same as yours. Also, As Denis pointed out, I had looked at the wrong key. I checked the registry at HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full & found it to be the same as yours.

Hi @Try3 & @Ghut:

I tried to install the runtime from Ghut post #22 (Denis: your Step 4.2) & it said that I already had the latest versions installed. I then tried to reinstall .Net Framework & went to the catalog:
PHP Code: 2021-01 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows 10 Version 2004 for x64 (KB4586876)
Last Modified: 1/8/2021
but I couldn't download it. Basically, nothing happened & I got this image:



I tried Step 5.2 in post #26, but I show both 3.5 & 4.8 installed.

I guess I'll try Step 6.2 now...turning off .NET Framework 3.5 &4.8 & turning them back on. Before I do, do I need to reboot in between. I don't want to screw this up.

Thanks again to both of you!!

 

Cant to install Net Framework 3.5 on Windows 8

Hello all,

i have issues with Framework 3.5 installation on my Tablet with W8, i have tryied below instructions but framework is not downloading just now. i need your help. Thanks

[Fix] Can’t Install Microsoft .NET Framework 3.5 in Windows 8 and Later

[Fix] 0x800F0906 and 0x800F081F Error Messages While Installing .NET Framework 3.5 in Windows 8/8.1

How to Install Microsoft .NET Framework 3.5 Offline in Windows 8 and Later without Internet Connection?Download Microsoft .NET Framework Offline Installer (64-bit, 32-bit) (All Versions)

[Fix] Can’t Install Microsoft .NET Framework 3.5 in Windows 8 and Later

 

Microsoft .NET Framework, Unhandled exception

Hi,

Welcome to Microsoft Community.

I suggest you to un-check and recheck .Net framework 3.5 and .Net framework 4.6 advance series from Windows features.

Try the following steps:

• Press Windows + R keys to open Run command.
• Type Appwiz.cpl and select "turn Windows feature on or off" from the left
• Uncheck .Net framework 3.5 and .Net framework 4.6 advance series.
• Restart the computer
• Repeat step 1 and 2 and check .Net framework 3.5 and .Net framework 4.6 advance series.
• Restart the computer.

Regards,