Windows won't upgrade with error 0xc1900101

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Windows won't upgrade with error 0xc1900101

nothing to see here 0

So i was upgrading my windows to build 29558 but i can't like every single times. I tried many solutions like dism, sfc or even deleting $WINDOWS~BT but it didn't work, here's some logs i will provide:
[Moderator Note: Personal Info Removed] (setupact.log)
[Moderator Note: Personal Info Removed] (setuperr.log)

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Answer 1

Clary-N 9,850 Microsoft External Staff Moderator

Hi nothing to see here,

Thanks for sharing the details and taking the time to gather the logs.

At the moment, I’m unable to access the log files from the links you previously shared. Could you please upload the log files directly via Private Message instead? This will allow me to review them properly and avoid any access issues.

Once I’m able to check the logs, I can look for any entries related to driver compatibility or rollback behavior, which are common causes behind upgrade error 0xC1900101, and then advise on the next steps.

Thank you for your cooperation and I look forward to your update.

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Clary-N 9,850 Reputation points Microsoft External Staff Moderator

2026-04-07T10:01:18.06+00:00

Hi nothing to see here,,

Thank you for sharing the log file.

The log shows multiple migration and setup-related errors, which are commonly associated with upgrade failures such as 0xC1900101. Although no single driver is explicitly identified, this pattern often points to driver incompatibilities, leftover system configurations, or third‑party software interfering with the upgrade process.

To help minimize these issues, please try the steps below before attempting the upgrade again:

1. Update device drivers

Ensure all critical drivers, especially storage, chipset, display, and network, are fully up to date. These should be downloaded and installed directly from the device or system manufacturer’s support website.

2. Remove third‑party system software

Temporarily uninstall any third‑party antivirus, encryption tools, VPNs, or system utilities, as these can prevent required file and registry changes during the upgrade.

3. Disconnect non‑essential hardware

Unplug external devices such as USB drives, docking stations, printers, or external monitors to reduce the chance of hardware or driver conflicts.

4. Perform an in‑place upgrade using installation media

Download the Windows Media Creation Tool then run setup.exe from within Windows. When prompted, choose the option to keep personal files and apps. This type of in‑place upgrade reinstalls Windows system files while preserving data and applications and is often more successful when standard upgrade attempts fail.

*Disclaimer: Let’s try performing an in-place install or in-place upgrade which will refresh your Windows files and operating system without removing files or applications. That being said, we always recommend that if you have important data, you should back it up before making large system changes. If you want to back up your data first, please do so.

If the upgrade still fails after completing these steps, providing the full setup logs, including setupact.log in addition to setuperr.log, would allow for more detailed analysis. Kindly send it via Private Message.

Please let me know how it goes, and feel free to reach out if you need any assistance with the steps above.

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Windows won't upgrade with error 0xc1900101

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