Windows 10: Windows 10 ver 20H2 barely usable after 20-12 Cumulative Update

My laptop did an automatic update on 4th Jan. Windows10 20H2 kb4592438.

Since then, I get several errors from various programs saying that

"system32\DUI70.dll is either not designed to run on Windows or it contains an error"and they either exit or hang at that point.

File Explorer, Task Manager and other Windows apps do not run any longer, rendering my system almost unusable.


Worst of all, I cannot undo that last update, as I get the same error as above from SystemSettingsAdminFlows.exe when it runs!


I think the update may have experienced a bit of trouble while installing. So, as I can't undo the update, how can I:

• Get a good copy of DUI70.DLL into the protected system32 directory, or
• Trick Windows into redoing the update

Because of critical work pressure right now, I really can't afford to lose everything on this laptop, and time is of the essence right now!


Any advice would be greatly appreciated

Mike Jackson

:)

 

Windows 10 Update

Well just noticed a pretty large one pop up coming in at 914MB, seems it makes some pretty serous updates.

KB3172985
https://support.microsoft.com/en-us/kb/3172985

This security update includes improvements and fixes in the functionality of Windows 10 Version 1511 and Windows Server 2016 Technical Preview 4. It also resolves the following vulnerabilities in Windows:

• 3175677 MS16-094: Security update for secure boot: July 12, 2016
• 3174060 MS16-093: Security update for Adobe Flash Player: July 12, 2016
• 3171910 MS16-092: Security update for Windows Kernel: July 12, 2016
• 3170048 MS16-091: Security update for .Net Framework: July 12, 2016
• 3171481 MS16-090: Security update for Kernel Mode Drivers: July 12, 2016
• 3170050 MS16-089: Security update for Windows secure kernel mode: July 12, 2016
• 3170005 MS16-087: Security update for the Microsoft Print Spooler: July 12, 2016
• 3169999 MS16-085: Cumulative security update for Microsoft Edge: July 12, 2016
• 3169991 MS16-084: Cumulative security update for Internet Explorer: July 12, 2016

 

Cumulative Update for Windows 10 for x64-based Systems (KB3156387) will not install

Anyone else having problems getting the Cumulative Update for Windows 10 for x64-based Systems (KB3156387) installed? This update has been failing for me & doing a failed to update after downloading & reboot, then rebooting & removing the update.

V 10.0 build 10240

 

Cumulative Update for Windows 10 for x64-based Systems (KB3156387) will not install

Maybe try with the Windows update mini-tool, found here http://www.techpowerup.com/forums/t...dows-10-automatic-updates-and-spyware.218745/ , thanks to Mussels. it installed perfectly for me last night.