📅 Last updated: May 2026
Fix steps
- Update GmsCore Download the latest version from official ReVanced GitHub releases
- Clear GmsCore data Settings → Apps → GmsCore → Clear Data → Try login again
- Disable battery optimization Settings → Battery → GmsCore → Don't optimize
- Check signature Ensure GmsCore signature matches the patched app
- Re-patch If issues persist, uninstall everything and re-patch from scratch
For ReVanced Users
- Update GmsCore - Download the latest version from official ReVanced GitHub releases
- Clear GmsCore data - Settings → Apps → GmsCore → Clear Data → Try login again
- Disable battery optimization - Settings → Battery → GmsCore → Don't optimize
- Check signature - Ensure GmsCore signature matches the patched app
- Re-patch - If issues persist, uninstall everything and re-patch from scratch
Common Error Messages
- "Error signing in" - Usually outdated MicroG/GmsCore
- "Account action required" - Google needs re-authentication
- Login loop - Clear data and re-authenticate
- "This app isn't verified" - Expected with non-root installations
Since Vanced MicroG is no longer updated, login issues may be permanent. Google regularly updates authentication systems, making old MicroG versions increasingly unreliable. Consider migrating to ReVanced or another alternative.
Causes and fixes
If the issue returns after a fix, note your YouTube base version, ReVanced Manager build, and whether GmsCore is installed. Mismatched versions are the most common cause of repeat failures.
Before factory-resetting or wiping app data, export subscriptions where the client supports it and confirm you downloaded patches from the official ReVanced GitHub organization.