Are you trying to a backup with this file, or are you getting an error message when trying to open it? Fresh Windows install triggers Windows Defender, breaks
If you are looking for a to create a file named "tmp.7z," or if you're trying to resolve a permission error where 7-Zip is stuck on a temporary file, 1. How to Create "tmp.7z" tmp.7z
Many developers use a script to create a temporary .7z file before renaming it to a final version (e.g., adding a timestamp). Delete any existing tmp.7z . Run 7z a tmp.7z [files] . Rename tmp.7z to Backup_2026-04-28.7z . 3. Troubleshooting "cannot open file tmp.7z.tmp" Are you trying to a backup with this