Symptoms
- Download starts then stops or disappears
- 'File blocked' or 'not commonly downloaded' warning
- Download completes but the file can't be found
- Browser says download failed with no clear reason
Likely causes
- CommonBrowser flags the file as potentially unsafeBrowsers block or warn on file types they consider risky by default.
- CommonAntivirus quarantining the file automaticallySecurity software can silently remove downloaded files it flags.
- CommonDisk is fullDownloads fail silently or partially when there's no storage space left.
- PossibleDownload folder location changed or missingIf the configured download folder was deleted or moved, saves can fail.
- PossibleInterrupted internet connection during downloadA dropped connection can cut off a large file mid-download.
What to do
- Check available disk space and free some up if it's nearly full.
- Look at your browser's download bar or history for a warning message explaining the block.
- Check your antivirus software's quarantine or history for the file.
- Confirm the browser's default download folder still exists and is set correctly.
- Try downloading the file again, or from a different browser.
- Temporarily disable antivirus real-time protection to test, then re-enable it right after.
When to call a pro
Only download files from sources you trust; if a file was correctly flagged as malicious, don't override the block.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.