error after mounting iso

[tiroler1956]

Hello,
When I try to update my PC from W11 22h2 to 25h2 using flyoobe, I drop the ISO file into the folder. However, after mounting the ISO, I get the following error: error: Unknown error (0xffffffff). When I look in File Explorer, I see the mounted ISO, and when I start it, the installation begins, but I get a message that my PC doesn't meet the system requirements. How can I fix this?

[Belim]

it's important that flyoobe does the mounting and runs setup.exe. do you have any other drives mounted, or generally a lot of drives besides d:, like e: or f:?