:

afternoon after reinstalling the Ubuntu virtual system, the “failed to download package files” error

appeared when downloading the software or updating the package

address:

modify the download source Settings

1. press Alt+ F2 and enter softwa-property-gtk.
2. changes the download location to “master server” or another server near your country of residence.
   select other select good Chinese site. If you’re in a university, tsinghua or another university is the.edu. Cn suffix. Choose Ali in China can also, or click choose the best server to let the system choose.
   
   

Reference

https://askubuntu.com/questions/73997/how-do-i-fix-a-failed-to-download-package-files-error