Why is my Microsoft calendar not syncing with my other devices?

1. Check that your Outlook, Exchange, and Office 365 accounts are all registered with the same username and password.
2. Verify that you have enabled calendar synchronization for your Microsoft account.
3. Clear the cache and restart the browser.
4. Check Microsoft’s website for any server-side issues.
5. Log out of all accounts and restart your device.
6. Check for updates to Outlook, Exchange, or Office 365.