hash-sum-errors if Windows is host.

[Woko]

I have a Kubuntu 20.04 Guest VM, that I can start from Windows 10 Host and Kubuntu 20.04 Host. Now I detectet a curious problem if I run an 'apt update' in the Guest, with Windows as host: I get hash-sum-errors. It works, if the host is Kubuntu. I attached the Output of both cases and the vbox-files of both guests.

[Woko]

Output of 'apt get' if Windows is the host.

[Woko]

Output of 'apt get' if Linux is the host.

[Woko]

vbox-file of Windows host

[Woko]

vbox-file of Linux host

[aeichner]

This sounds a lot like a duplicate of #19695, I assume you are using the Hyper-V backend on the Windows host. I'll close this one for now, please continue in the referenced ticket.