The Error writing temporary file, Make sure your temp folder is valid indicates that Windows cannot read or write inside the temp folder. So there are a couple of ...

If when you boot your Windows 11 or Windows 10 computer, or when you try to run an executable to install a particular program on your device, you receive the error ...

Here are screenshots of the logs, although they are hard to read for some reason: I found a similar issue on reddit and used their advice to create a temp folder within the proton prefix, but that ...

Operating System: Windows (reproducible on a Japanese-language installation, but affects any non-ASCII username). Software: HandBrake CLI or any part of the library that creates temporary files.