Windows 10: windows 2021-05 Cumulative update for Windows 10 Version 1909 failed

Two desktop computers failed to install the last cumulative update for version 1909, whereas my laptop succeeded. Download and preparation were ok but at 25% of the installation the update ran into problems: (KB5003169- error 0xac00a000. The trouble shooter just notices an error, but no solution. I tried every trick I could find on the internet for this error code, but nothing helps. Who helps me out?

:)

 

Slow to load hung up 2020-05 Cumulative Update for Windows 10 Version 1909 for x64-based Systems (KB4556799)

12 PLUS attempts at downloading this release

2020-05 Cumulative Update for Windows 10 Version 1909 for x64-based Systems (KB4556799)

all have failed. I have attempted using many of the suggested fixes to no avail. The most recent attempt were the fixes shown on this page. Always fails at steps 6 to 7; goes to restart.

 

Windows 10 Cumulative Updates failing to install since April

The last successful Windows 10 Cumulative Update was in March (KB4551762). Since then, every single update has failed to install:

20th June

2020-06 Cumulative Update for Windows 10 version 1909 for x64-based Systems (KB4560960)

FAILED: 0x800f0988

9th June

2020-05 Cumulative Update for Windows 10 version 1909 for x64-based Systems (KB4556799)

FAILED: 0x800f0988

8th May

2020-04 Cumulative Update for Windows 10 version 1909 for x64-based Systems (KB4549951)

FAILED: 0x800f0986

24th April

2020-04 Cumulative Update for Windows 10 version 1909 for x64-based Systems (KB4549951)

FAILED: 0x8024000b

23rd April

2020-04 Cumulative Update for Windows 10 version 1909 for x64-based Systems (KB4550945)

FAILED: 0x800f0988

2nd April

2020-03 Cumulative Update for Windows 10 version 1909 for x64-based Systems (KB4541335)

FAILED: 0x800f0986

Steps I have already taken to resolve the issue:

• Windows Update Troubleshooter: Did not find any issues;
  
• sfc/scannow: Windows Resource Protection: Did not find any integrity violations.
  
• DISM /Online /Cleanup-Image /RestoreHealth: The restore operation completed successfully.
  
• ‘In-place’ re-installation using Image Creation Tool or ISO file: Does not support Windows Enterprise.
  
• Re-installation using standalone Windows Installer MSU file (downloaded from Windows Update Catalogue): Installation failed.
  
• deleted all files from C:\WINDOWS\SoftwareDistribution\Download: It did not help.
  
• cleaned C:\WINDOWS\SoftwareDistribution\SLS (deleted all sub-folders except those dated 14th March = last successful Windows update): It did not help.
  

The laptop in part of a domain and I consider Resetting PC as the last resort.

 

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