Windows Update issues are not yesterday’s news, and they are probably here to stay longer than we would like. One of our readers reported that when he tries to update Windows 11, the process gets stuck, getting the 0xc1900101 error. Then, the PC restarts only to see the Undoing changes made to this PC message on the screen. It’s incredibly frustrating because the update gets interrupted at a high completion percentage. We have been confronted with error 0xc1900101 on Windows 10 too, and it’s usually related to corrupt or faulty drivers, so it’s most likely that Windows 11 inherited this bug.

Why does my computer keep saying undoing changes?

From user experience, we can tell that a few things may trigger this message. At the top of the list, we have the following:

Update errors – The Undoing changes made to this PC message result from an error during the Windows Update process. Uncompleted processes – This mainly comes with the error 0xc1900101, but any such Windows Update fault can trigger the same problem and stop the process. Bad or corrupted drivers – Problematic drivers usually produce this particular error. Corrupted system files – Generally, when vital system files are corrupted, you will expect various errors to be thrown by the computer, which may trigger the computer to undo changes. Overprotective antivirus programs – For some users, this is the case. The antivirus is doing more than required and may not allow some legitimate systems to run correctly.

There’s a whole family of error codes related to this problem, and the solutions we recommend will also work if you experience error codes 0xC1900101 – 0x2000c, 0x20004, 0x20017, 0x40017, 0x30018, 0x3000D, or 0x4000D.

How can I fix Undoing changes made to your computer message?

Before trying any of the solutions recommended below, we suggest you detach every connected peripheral. There is the off chance that they may be interacting with a process and triggering this error.

1. Update the drivers

The method showcased above is manual and often tiring, so we recommend downloading DriverFix, a reliable tool that will keep the installed drivers up-to-date. ⇒ Get DriverFix

2. Run the Windows Update troubleshooter

3. Check for Windows updates

Even though the update is exactly the procedure you cannot perform, there might also be other system updates that you have missed, and installing them before the problematic one may solve this issue. SPONSORED

4. Disable or remove your antivirus

We have shown you how to turn off the Windows Defender Antivirus, but if you have a third-party antivirus installed, you need to turn it off from its settings. If that doesn’t work, uninstall your antivirus temporarily because it may block your updates. Of course, you can always reinstall it afterward. If you discover that that software was causing the problem, think about getting a better antivirus for Windows 11.

5. Run an SFC scan

6. Scan your hard drive for errors

7. Reset your PC

If the procedure is unsuccessful, read our guide on what to do if the Reset PC is not working in Windows 11 and solve it immediately. We hope our solutions helped you fix this update problem and that you removed the Undoing changes made to this PC message on the screen. You should also check if your PC has enough space on your drive for the update because this update error might also be caused by insufficient disk space. It would be helpful to check our article on how to make Windows 11 faster and more responsive, and you will also learn how to free some space on your drive. Lastly, note that the solutions above will work for many cases, including undoing changes made to your HP or Dell computer and the black screen problem. Let us know the method you opted for in the comments section below.

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