Cant update- Cumulative update preview for windows 10 version 20H2 for x64 - based systems (KB5004296)Any solution?

I had this problem for a long time and tried many different methods. The problem is that Windows Update, when it fails, does not provide enough error information. I found out that if one uses the online Windows Update (https://www.microsoft.com/en-us/software-download/windows10, then choose Update now), it may give you additional information about why the update failed. In my case, it said "You can't install Windows on a USB flash Drive using setup". A little search revealed that it was caused by HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\PortableOperatingSystem was set to 1. After changing it to 0, I went through the online update successfully. Hope this helps.

Hello Arush47 Please run the below commands in CMD. Ensure you run CMD as an admin. These commands will delete the Windows Update registry log on your machine and then next time you click on check for updates, WU will check against the entire WU database. Reg delete HKLM\Software\Policies\Microsoft\Windows\WindowsUpdateyes Net stop wuauserv >NUL Cd C:\windows rmdir softwaredistribution /s /q Net start wuauserv >NUL I am sure this will help. Let me know how you get on. Thanks,Jose

You can try these methods to troubleshoot your Windows 10 update issue:Method 1: Run SFC Scan.To run an SFC scan, follow these steps:Run Command Prompt as Administrator.Type sfc /scannow and hit Enter.This will check and run an auto-repair on the issue.Method 2: Run DISM Tool.After running the SFC scan and the issue still persist, run the DISM to check the system health and to try restoring the files. To run DISM tool, follow these steps:Run Command Prompt as Administrator.Type the following commands:DISM.exe /Online /Cleanup-image /scanhealthDISM.exe /Online /Cleanup-image /RestorehealthNOTE: This might a while to finish scanning. Do not cancel.Method 3:After doing Method 1 and Method 2 but the issue still persist, you can manually reset the Windows Update Components and Run Windows Update process again.Resetting Windows Update Components will fix those corrupted Components and will help the Update installation quickly. To reset Windows Update Components, follow these steps:Run Command Prompt as AdministratorStop BITS, Cryptographic, MSI Installer and Windows Update Services. To do this, type the following commands:Net stop wuauservNet stop cryptSvcNet stop bitsNet stop msiserverRename SoftwareDistribution and Catroot2 folder. To do this, type the following commands:Ren C:\Windows\SoftwareDistribution SoftwareDistribution.oldRen C:\Windows\System32\catroot2 Catroot2.oldRestart BITS, Cryptographic, MSI Installer and Windows Update Services. To do this, type the following commands:Net start wuauservNet start cryptSvcNet start bitsNet start msiserverRestart your computer and try to install Windows Update.Let us know how it goes.

j_z_y Your advice was simple, easy to perform and fix a problem with Windows 10 updates I was struggling for 1 month to solve. I really appreciate your expertise. Thank you.Andrei

it did not work for me i need help

Windows Update error (Your device is missing important security and quality fixes)

NourN1070
Copper Contributor
Oct 13, 2024
Arush47
Smithchow
Copper Contributor
Mar 28, 2024
Just change the Name of the Software Distribution Folder, which is a crucial component of Windows that houses the files necessary for Windows updates. Managed quietly by the Windows Update Agent in the background, this folder occasionally might block new updates from installing.

This issue often arises when there's a mismatch between the Windows Datastore folder and the Download folder.
Dickesbach
Copper Contributor
Jan 11, 2024
All i know:
Run the Windows Update Troubleshooter: Windows includes a built-in tool for detecting and resolving typical Windows Update errors. To access it, go to Settings > Update & Security > Troubleshoot > Windows Update, and then select the "Run the troubleshooter" button.

Clear the Windows Update cache: Sometimes, corrupt Windows Update cache files can prevent updates from downloading and installing correctly. To clear the cache, open the Command Prompt as an administrator, and then type "net stop wuauserv" followed by "net stop cryptSvc" and "net stop bits". Then, navigate to the "C:\Windows\SoftwareDistribution" folder and rename the "Download" folder to "Download.old". Finally, return to the Command Prompt and type "net start wuauserv", "net start cryptSvc", and "net start bits" to restart the necessary services.

Check for available disk space: Windows updates require a certain amount of free space on your hard drive to install properly. Ensure that you have enough free space on your system drive (usually C:) to accommodate the update.

Disable security software temporarily: Sometimes, third-party security software can interfere with the update process. Try disabling your antivirus or firewall temporarily and then attempt to run Windows Update again.
Deleted
Sep 17, 2023
Still have issue??
nururrahman
Copper Contributor
Sep 17, 2023
nururrahmanArush47
JosePinos55
Brass Contributor
Aug 14, 2021
Hello Arush47

Please run the below commands in CMD. Ensure you run CMD as an admin. These commands will delete the Windows Update registry log on your machine and then next time you click on check for updates, WU will check against the entire WU database.

Reg delete HKLM\Software\Policies\Microsoft\Windows\WindowsUpdate
yes

Net stop wuauserv >NUL

Cd C:\windows

rmdir softwaredistribution /s /q

Net start wuauserv >NUL

I am sure this will help. Let me know how you get on.

Thanks,
Jose
- Timtec57
  Copper Contributor
  Mar 22, 2024
  JosePinos55no errors doing each command. Rebooted 2 times after just incase. Did not fix the issue.
- PearOfDice
  Copper Contributor
  Mar 09, 2024
  JosePinos55 It says "Access is denied"...
- Dreese5160
  Copper Contributor
  Jan 10, 2024
  JosePinos55 This worked perfect for me, but I am trying to figure out a way to run it across several machines at once. I dont know how so many machines ended up in this state as I am new to my role here but I know it has worked on about 15 machines I have ran this against. If anyone has a suggestion for me to chase I am very greatful for any guidance you may have for me.

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Windows Update error (Your device is missing important security and quality fixes)

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