Microsoft explains how to resolve Windows 11 24H2 error 0xc1900101 by retrying or making additional efforts

We noticed this issue and it led us to question whether others are encountering the same error.

It appears that the 0xc1900101 error is quite prevalent, with numerous users facing this problem during the testing of 24H2 Insider builds as well as in the final version releases.

Specifically, this bug first emerged in the initial 24H2 Insider build released in February this year (build 26052). It has reappeared multiple times since then, with recent occurrences noted in September. However, Microsoft has indicated that this issue was resolved earlier this month in build 27718, stating:

We addressed a problem that caused certain Insiders to experience a freeze at the boot screen, resulting in their PC reverting back with error 0xC1900101 when trying to upgrade to the prior version.

This error has also been highlighted on the Feedback Hub, including a notable instance titled “My PC rolled back when trying to install the latest Windows Update (error code 0xc1900101)”which garnered over 8000 upvotes across two different entries.

In response to these concerns, Microsoft clarified that the error code in question is a general indication that an update has failed and consequently rolled back. They mentioned:

The error code 0xc1900101 is a general code displayed when an update fails, resulting in a rollback for various reasons. This is an area we keep a close watch on, as it can stem from different underlying issues depending on the specific build you were upgrading to and your configuration. If you were trying to upgrade to a previous Insider build, consider using the latest build, as it may resolve your problem.

If you’re looking for more insight into potential causes of your specific issue, checking the update logs can be beneficial: Update Logs.

In essence, Microsoft encourages users to attempt the process again or to try alternative methods if they encounter this error.

Additionally, in a different support article, the company has provided more guidance concerning this error, indicating that it often relates to “driver problems.”They suggest:

An error starting with 0xC1900101 typically points to a driver issue. If you encounter any of these specific error codes, take the following steps to try and resolve the situation. If these don’t succeed, refer to the Windows upgrade error resolution guide for further technical assistance.

• 0xC1900101 – 0x2000c
• 0xC1900101 – 0x20017
• 0xC1900101 – 0x30018
• 0xC1900101 – 0x3000D
• 0xC1900101 – 0x4000D
• 0xC1900101 – 0x40017

Relatedly, if you’re unable to access the Windows 11 24H2 Update on your device, you might be able to trigger it manually using a Group Policy or Registry modification.

Source