How to fix Windows update error 0xc1900401?

Issue: Hello. I need help with the update error 0xc1900401. I get the failed install error message and cannot fix the problem with the options found online. SFC tool showed and solved nothing. Forums and Reddit offer nothing better. I need serious help, because I am devastated at this point.

Solved Answer

Installing pending updates might often fail and lead to error messages, other system issues. It happens on Windows 10 machines and on recently upgraded devices that run Windows 11 operating system.[1] Users reported these issues for a while,[2] and received no particular fixes that could be universal for all frustrated people.

The issue is related to the launched upgrades for the version of Windows 10. The problem appears to bother users while trying to update the OS. It is common to receive errors during such a process because an upgrade requires particular files to be there and needs space. If there is not enough space or some files are corrupted, altered, damaged – issues occur and the procedure fails entirely.

Windows update error code 0xc1900401 can be triggered by the weak or low speed of the internet. OS updates require good quality of connection. You might want to check the speed or try to upgrade the OS at a less busy time when the speed is better. Also, the quality of the attached devices can lead to issues, disconnecting any devices from the computer when they are not needed.

Disabled services of the system update can always create issues with the procedure because the service is not enabled properly on the machine. The error can easily appear when the system has corrupted files, folders, system settings, preferences regarding the system reboot, and startup. PUP or malware[3] leftovers often cause such issues.

Corruption inside Windows folders is one of the more common causes for errors like Windows update 0xc1900401. Such common issues can be solved with applications like FortectMac Washing Machine X9 because this tool is designed to find and repair issues with corrupted files, altered settings, damaged components.

If you can point to the time when the additional issues started to occur besides the error, you might know that application installation or corruption with a third-party app causes this Windows update error 0xc1900401. If these solutions are not related to your situation – follow the guide and try a few methods to find the one that helps to fix this Update error.

Windows update error 0xc1900401 fix

1. Check the Windows Update service

  • Click Start and start typing for services.msc.
  • Open it.
  • A new window will open containing all Windows services.
    Windows services
  • Search for Windows Update.
  • Right-click the Windows Update and then click Stop.
    Services start/stop

2. Clear temporary cache for Windows Update

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  • Hold your windows key and hit R key.
  • Run window will appear.
    Run box
  • Type %windir%\\SoftwareDistribution\\DataStore in this new window and click OK.
  • This will open Windows Explorer.
  • Delete all contents of this folder.

3. Start the Windows Update service

  • Go back to the Windows Services.
  • Locate Windows Update.
  • Right-click on it and choose Start.

4. Troubleshoot the Windows update

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  • Press Win + I, navigate to Settings.
  • Choose System, then Troubleshoot.
    Win 11 troubleshooting
  • Hit Other troubleshooters.
  • Find Windows Update.
  • You will see a Run button beside Windows Update – click it.
  • Reboot your PC when the troubleshooting process is completed

Windows 10

  • Go to Settings.
  • Choose Update & Security.
  • Hit Troubleshoot and find Additional troubleshooters.
  • Locate and click Windows Update.
  • Hit the button Run the troubleshooter.
    Win 10 troubleshooter
  • Let this tool find and resolve any issues.
  • Once this is over, reboot your computer.

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About the author
Ugnius Kiguolis
Ugnius Kiguolis - The problem solver

Ugnius Kiguolis is the founder and editor-in-chief of UGetFix. He is a professional security specialist and malware analyst who has been working in IT industry for over 20 years.

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