System
Error Reports
Windows Error Reporting stores crash artifacts under the WER folder after an application, service, driver, or Windows component fails. These reports typically include queued report packages, minidumps, heap or triage dumps, AppCompat text files, metadata manifests, and temporary CAB archives created so Windows can analyze the fault and optionally upload it to Microsoft. Kudu removes those accumulated WER report caches and queued crash files without touching your documents, installed apps, accounts, or system settings.
Why clean Error Reports?
- Queued WER reports from repeated app or driver crashes can pile up into hundreds of megabytes or more, and you notice disk space shrinking even though the original problem already happened days ago
- Stuck report queues leave old crash packages in ReportQueue and ReportArchive, so Action Center or reliability-related prompts may keep referring to past failures you have already resolved
- Large heap dumps and CAB-packaged crash reports make antivirus scans, backup jobs, and file indexing take longer because there are more bulky diagnostic files to process
- After a buggy app enters a crash loop, WER keeps generating new minidumps and metadata files, and the visible symptom is rapidly growing AppData storage until the underlying app issue is fixed
- Some WER folders contain partially uploaded or abandoned report bundles after interrupted telemetry submission, which leaves dead diagnostic data on disk with no benefit to the user
- Old archived crash reports clutter Reliability Monitor history with entries that are no longer actionable, making it harder to spot current failures among stale diagnostics
- When the same component crashes many times, WER's local store becomes a backlog of duplicate signatures, and the user mainly experiences wasted SSD space rather than any recovery benefit
What gets cleaned
Cache paths Kudu targets
Windows
%LocalAppData%/Microsoft/Windows/WER |
Frequently asked
Common questions about Error Reports
Related cleaners
Free & open source
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Available on Windows, macOS, and Linux. No account required, no feature gates, no telemetry without consent. All cleaning targets are open source and community-auditable.