- Will my calendar events be lost if I fix a sync error?
- No. Calendar events are stored on the server (Exchange, Microsoft 365, Google, etc.). Fixing the sync just re-establishes the connection — events are re-downloaded after resync.
- Is an Outlook calendar sync error a sign my account was hacked?
- No. Sync errors are almost always caused by connection issues, permission changes, or cached data corruption — not security incidents.
- How do I force Outlook to resync my calendar?
- In Outlook: right-click the calendar in the left panel → Properties → clear the offline cache (on Exchange/Microsoft 365 accounts). Or go to File → Account Settings → Data Files → remove and re-add the account to force a full resync.