What i also noticed is that the log files get deleted when i start the second instance. Could it be that the error happens because they use the same log path and that the command /LogPath has to be set to in the script too?
You can try change this in the second instance to i.e. DISM2 Code: set "_dLog=%SystemRoot%\Logs\DISM"
I will try it in 2 days. I'm already running something and it will take 2 days to finish up. And yes i use an SSD even a PCIe4 SSD. Damn DISM tool.
Okay the DISM is finally done. And now i found out, that i get this error as soon as i change the "_CabDir", "MountDir" or "WinreMount" entries in the .ini file to something else (Like: "W10*" to "W11*").