Stale Electron Updater Packages
Many Electron-based Windows apps download full update packages into root-level updater cache folders under %LocalAppData% before handing them off to Squirrel or NSIS-based auto-updaters. Over time, old .nupkg packages, installer .exe files, differential patch remnants, and partially superseded release payloads can accumulate after a successful update or a canceled one, even though the app no longer needs them. Kudu removes only stale root-level Electron updater packages older than 14 days, leaving pending updates, nested files, and anything recent untouched, and it does not affect your app data, sign-in state, settings, or saved content.
Why clean Stale Electron Updater Packages?
- Old .nupkg and installer .exe files from completed Electron updates pile up in %LocalAppData%, and the visible symptom is unexpectedly high disk usage from apps that seem small.
- Superseded differential and full update packages can leave multiple versions of the same release payload behind, so you notice storage steadily growing after every app update even though the app itself launches normally.
- Abandoned downloads from a canceled or interrupted auto-update remain in the updater cache, which shows up as leftover multi-hundred-megabyte files with no corresponding installed version change.
- When free space is already low, stale updater packages consume room the updater needs for the next download, leading to 'not enough disk space' update errors or repeated prompts to retry.
- Root-level updater caches are often scanned by backup and antivirus tools, so accumulated old packages can make LocalAppData backups slower and cause longer scans of inactive installer files.
- Removing outdated updater payloads reduces clutter without touching current pending updates, preventing confusion when users inspect LocalAppData and find old package files that look like unfinished installs.
Cache paths Kudu targets
Windows
%LocalAppData% |
Common questions about Stale Electron Updater Packages
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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.