APRIL 9, 2024-KB5036620
Microsoft’s Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 22H2 and Windows 11, version 23H2 (KB5036620) cripples any hope of setting Adobe Acrobat Reader as the default application for opening PDFs.
Uninstalling KB5036620 allows Acrobat Reader to be set as the default app for opening PDFs.
Read more about KB5036620 here: https://support.microsoft.com/en-us/topic/april-9-2024-kb5036620-cumulative-update-for-net-framework-3-5-and-4-8-1-for-windows-11-version-22h2-and-windows-11-version-23h2-20c41b49-cd82-4fed-a1b1-0e9ce5a21b5d
Microsoft’s Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 22H2 and Windows 11, version 23H2 (KB5036620) cripples any hope of setting Adobe Acrobat Reader as the default application for opening PDFs.
Uninstalling KB5036620 allows Acrobat Reader to be set as the default app for opening PDFs.
Read more about KB5036620 here: https://support.microsoft.com/en-us/topic/april-9-2024-kb5036620-cumulative-update-for-net-framework-3-5-and-4-8-1-for-windows-11-version-22h2-and-windows-11-version-23h2-20c41b49-cd82-4fed-a1b1-0e9ce5a21b5d
Can’t Reset Default App for PDFs Opening in Edge