Common Causes
- Invalid credentials
- Wrong region/endpoint (S3-compatible)
- Destination path/folder not found or not permitted
- Provider rate limits or temporary API failures
Fix Checklist
- Re-test credentials (copy/paste carefully)
- Confirm region/endpoint
- Confirm bucket/folder exists
- Confirm permissions allow upload
- Try a smaller test file/backup first
Tip
If upload succeeds but verify fails, your credentials may allow write but not list/read.