Forum Discussion

indieben's avatar
indieben
Copper Contributor
Apr 10, 2025

windows insider preview 10.0.26200.5518 won't install via Windows Update

Good day, 

I am helping my friend with her laptop and the above update fails after taking around 12 hours to install via Windows Update. I raised this with Microsoft support and they referred us here. 

The laptop was originally running Windows 10 home at the time of purchase. 

 

A) is there any way of getting a standalone version of the above or any other way to install it - I've ran DISM Restore Health and SFC but this has not made a difference. Ive cleared out the SoftwareDistribution directory and attempted to run the Windows Update troubleshooter but it was unable to run. 

 

If we were to attempt to revert to a standard copy of Windows, should we be doing an in place reinstall of Windows 10 home or Windows 11? 

 

Thanks. 

3 Replies

  • BaylorHuck's avatar
    BaylorHuck
    Iron Contributor
    Aug 10, 2025

    Run Windows Update Troubleshooter


    Go to Settings > Update & Security > Troubleshoot > Additional troubleshooters.

    Run the Windows Update Troubleshooter and apply fixes.

  • Olaann's avatar
    Olaann
    Iron Contributor
    Aug 06, 2025

    It sounds like your friend's laptop is experiencing a challenging issue with installing the Windows Insider Preview build 10.0.26200.5518 via Windows Update, and you've already taken several troubleshooting steps.

  • TimyAd's avatar
    TimyAd
    Brass Contributor
    Aug 02, 2025

    Pause Insider Preview updates for 7 days, delete the C:\Windows\SoftwareDistribution\Download folder, and try again.