I've tried upgrading a laptop to Windows 11, with an existing VeraCrypt system encryption. I decrypted the partition and removed the system encryption first, then tried the update. It always failed with error 0xc190012e. I couldn't find any details about that error code, or helpful advice. I've tried a bunch of generic stuff (upgrading via either Windows Update or Windows Update Assistant, `chkdsk`, `sfc /scannow`, safe mode with networking, and probably some more), but none of these resolved the issue.
tldr: Delete or rename `C:\Users\Default\AppData\Local\Microsoft\Windows\WSUS\SetupConfig.ini` after removing the system encryption.
A few more words about this:
There's a file `C:\Users\Default\AppData\Local\Microsoft\Windows\WSUS\SetupConfig.ini` (<a href="https://learn.microsoft.com/en-us/windows-hardware/manufacture/desktop/windows-setup-automation-overview?view=windows-11">documentation</a>) which VeraCrypt creates when encrypting the system partition, with the following content (for me at least):
```
[SetupConfig]
ReflectDrivers="C:\Program Files\VeraCrypt"
PostOOBE=C:\ProgramData\VeraCrypt\SetupComplete.cmd
```
After removing system encryption, the file only contains
```
[SetupConfig]
```
but still exists.
Removing or renaming this file allowed me to upgrade and re-enable system encryption without further problems. I've tried it on another (desktop) machine to verify - ran into the exact same problem, which went away after removing that file.
<em>Edit: I've opened a <a href="https://github.com/veracrypt/VeraCrypt/issues/1483">bug report at VeraCrypt's repo</a>.</em>