Apps
Old Firefox Pending Crashes
Firefox stores unsubmitted crash report bundles in the Crash Reports\pending folder when the browser or a content process terminates unexpectedly and the report has not yet been sent. These pending items typically include minidump .dmp files plus companion metadata such as .extra and event files used by Mozilla's crash reporter to describe the failure. Kudu removes only pending crash reports older than 30 days, freeing disk space while leaving recent crash data, browser settings, saved passwords, bookmarks, and profile content untouched.
Why clean Old Firefox Pending Crashes?
- Repeated browser or plugin crashes can leave behind dozens of old minidump and .extra files, making the pending crash folder grow unexpectedly and consume space in AppData
- Unsubmitted reports from crashes you already resolved no longer help with current troubleshooting, so clearing older bundles reduces clutter without affecting current Firefox use
- Large backlogs of stale pending reports make it harder to spot a fresh crash you actually want to inspect or submit when diagnosing a new problem
- Systems with frequent tab, extension, or GPU-process crashes can accumulate many small forensic files over months, and users usually notice this as unexplained profile-related disk usage
- Old pending crash artifacts do not improve startup speed or page loading, so keeping them indefinitely provides little benefit once they are well past the point of useful reporting
- Removing only reports older than 30 days preserves recent unsent crash evidence for active debugging while clearing outdated dumps that would otherwise linger indefinitely
What gets cleaned
Cache paths Kudu targets
Windows
%AppData%/Mozilla/Firefox/Crash Reports/pending |
Frequently asked
Common questions about Old Firefox Pending Crashes
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