Windows 10: KB5003266 Cumulative Update .NET Framework 3.5 and 4.8 Windows 10 Next

Discus and support KB5003266 Cumulative Update .NET Framework 3.5 and 4.8 Windows 10 Next in Windows 10 News to solve the problem; May 12, 2021 - KB5003266 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows 10 Version Next to Windows Insiders in the Dev Channel. Release... Discussion in 'Windows 10 News' started by Brink, May 12, 2021.

  1. Brink Win User

    KB5003266 Cumulative Update .NET Framework 3.5 and 4.8 Windows 10 Next


    May 12, 2021 - KB5003266 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows 10 Version Next to Windows Insiders in the Dev Channel.

    Release notes are not available from Microsoft.

    KB5003266 Cumulative Update .NET Framework 3.5 and 4.8 Windows 10 Next [​IMG]




    :)
     
    Brink, May 12, 2021
    #1
  2. Brink Win User
    Brink, May 12, 2021
    #2
  3. Try3 Win User
    KB4586876 Cumulative Update .NET Framework 3.5, 4.8 Windows 10 Jan. 12 Win Update

    Phil,

    This might all be pretty confusing now.

    I suggest

    1 Turn on updates for other MS products - my post #22
    2 Run WU to see if it now shows that KB4586876 .Net update as being required

    3.1 If WU lists it then install it.
    4.1 If it installs and there are no remaining problems, stick the kettle on.

    3.2 If WU still does not list it then use that .Net fixer tutorial I gave you a link to - my post #18
    4.2 If the problem defies the fixer tool then study the Ghot guidance in that other thread I gave you a link to [ - my post #18] and consider Ghot's suggestion of re-installing the runtime [his post #21].
    5.2 If it refuses to install, try reinstalling v3.5 - Install .Net Framework 3.5 - TenForumsTutorials The update is for both 3.5 & 4.8 but I suppose there's a chance that reinstalling 3.5 would give something a kick up the pants enough to get it all working.
    6.2 If it still won't play, consider unloading then reloading both .Net entries in CP, P&F, Turn Windows features on & off. We used to do that for WMP in Windows 7 so it is a pretty well-established method but I have not seen anybody apply it to .Net entries before so you might want to discuss it further before doing anything about it.

    Best of luck,
    Denis

    12:29 - I have now finished fiddling with this post.
     
  4. phrab Win User

    KB5003266 Cumulative Update .NET Framework 3.5 and 4.8 Windows 10 Next

    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.
     
    phrab, May 12, 2021
    #4
Thema:

KB5003266 Cumulative Update .NET Framework 3.5 and 4.8 Windows 10 Next

Loading...
  1. KB5003266 Cumulative Update .NET Framework 3.5 and 4.8 Windows 10 Next - Similar Threads - KB5003266 Cumulative Update

  2. .NET Framework 8

    in Windows 10 Gaming
    .NET Framework 8: Hi,I hope this message finds you well. I am inquiring about the possibility of using .NET 8.0 for our web apps. It may offer some advantages from a security standpoint. However, some team members may have reservations about upgrading, particularly given the ongoing security...
  3. .NET Framework 8

    in Windows 10 Software and Apps
    .NET Framework 8: Hi,I hope this message finds you well. I am inquiring about the possibility of using .NET 8.0 for our web apps. It may offer some advantages from a security standpoint. However, some team members may have reservations about upgrading, particularly given the ongoing security...
  4. KB5001030 Cumulative Update .NET Framework 3.5 and 4.8 Windows 10 Next

    in Windows 10 News
    KB5001030 Cumulative Update .NET Framework 3.5 and 4.8 Windows 10 Next: February 16, 2021 - KB5001030 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows 10 Version Next to Windows Insiders in the Dev Channel. Release notes are not available from Microsoft. [img] 174437
  5. KB4601049 Cumulative Update .NET Framework 3.5 and 4.8 Windows 10 Next

    in Windows 10 News
    KB4601049 Cumulative Update .NET Framework 3.5 and 4.8 Windows 10 Next: February 9, 2021 - KB4601049 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows 10 Version Next to Windows Insiders in the Dev Channel. Release notes are not available from Microsoft. [img] 173952
  6. KB4597245 Cumulative Update .NET Framework 3.5 and 4.8 Windows 10 Next

    in Windows 10 News
    KB4597245 Cumulative Update .NET Framework 3.5 and 4.8 Windows 10 Next: January 12, 2021 - KB4597245 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows 10 Version Next to Windows Insiders in the Dev Channel. Release notes are not available from Microsoft. [img] 172166
  7. KB4585206 Cumulative Update .NET Framework 3.5, 4.8 Windows 10 Next

    in Windows 10 News
    KB4585206 Cumulative Update .NET Framework 3.5, 4.8 Windows 10 Next: November 2020 - KB4585206 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows 10 Version Next to Windows Insiders in the Dev Channel. Release notes are not available from Microsoft. Product Version Cumulative Update Windows 10 Version Next and Windows Server,...
  8. KB4570721 Cumulative Update .NET Framework 3.5, 4.8 Windows 10 Sept. 3

    in Windows 10 News
    KB4570721 Cumulative Update .NET Framework 3.5, 4.8 Windows 10 Sept. 3: September 3, 2020 - KB4570721 Cumulative Update Preview for .NET Framework 3.5 and 4.8 for Windows 10 Version 2004 The September 3, 2020 update for Windows 10 Version 2004 includes cumulative reliability improvements in .NET Framework 3.5 and 4.8. We recommend that you apply...
  9. .NET Framework 4+

    in Windows 10 Customization
    .NET Framework 4+: Hey guys, Just wondering how do I find out what version of .NET Framework i have installed? I have looked in the programs and features, but cannot find anything in there. If its not installed, then how come? This is a new PC and has windows 10 1803 (I will not install...
  10. Cumulative .NET Framework updates for Windows 10

    in Windows 10 News
    Cumulative .NET Framework updates for Windows 10: Microsoft plans to change how .NET Framework updates are delivered and deployed on devices running Windows 10 in the near future. Starting with Windows 10 version 1809, the October 2018 Update, .NET Framework updates will be provided in a cumulative format similarly to how...