The most common cause of an out-of-date account is an incorrect password.
In the notification bar at the top of the app, select Fix account.
Problems updating windows phone
If that doesn't solve your issue, try the solutions below.
Firewalls and antivirus software might prevent you from syncing your email and calendar events.
The Mail and Calendar apps for Windows 10 don't support two-factor authentication.
If two-factor authentication is turned on for your account, you'll need to create an app password for that account.
An app password is used instead of your normal account password for apps that don't support two-factor authentication.
Check with your email provider for instructions about how to create an app password for your email account.Identifying the Issue Fixing the Issue Community Q&A The Lumia 535 was the first Microsoft branded Lumia handset and an affordable smartphone as well.Unfortunately, a touchscreen bug hit the phone making it uncomfortable to use.Check the software documentation to learn how to temporarily turn it off.WARNING: If you disable your antivirus software, don't open any email attachments or click any links in messages from people you don't know.Before you begin, make sure that your device has the latest operating system and app updates.