Ways to Fix Windows 10 Mail Sync Error 8500201D

The error code 8500201D can come up on your screen when there is a syncing error. This mostly affects the Mail and Calendar apps on the Windows phone or computer. However, the issue is not limited to only mobile and calendar apps. If you are facing this error code, here are some ready solutions that you can try out.

Common Reasons for Error Code 8500201D to Happen

There can be many different reasons as why you may be seeing the error code 8500201D on your screen. Here are some of the most common reasons for this issue to occur.

  • Misconfigured email account
  • Corruption related to mail, contacts and calendar among others
  • Use of incorrect password


Solution 1:Check For Updates

One of the first things that you can check to resolve this error is to check if the automatic updates feature is enabled. You need to make sure that you have the latest updates especially for Mail and Calendar app. Also note, that you need to update both the apps and the operating system.

Solution 2:Change Privacy Settings

  1. Go to ‘Start’ and access ‘Settings’ app
  2. Navigate to ‘Privacy Section’
  3. Select ‘email’ and turn on ‘Let apps access and send email’
  4. Go to ‘Choose apps that can access and send email’ and turn on ‘Mail and Calendar’
  5. Click on ‘Calendar’ and turn on ‘Let apps access my calendar’. Check if the app connector is turned on
  6. Restart the computer and check if the error is resolved.



Solution 3: Use Secure Connection

  1. Open the mail app
  2. Click the Settings icon at the bottom on the left
  3. Select your account and then go to ‘Change mailbox settings’
  4. Check ‘Server requires encrypted (SSL) connection and Email’ right under the sync options
  5. Restart and check if the error is fixed

Solution 4: Change Account Sync Settings

  1. Go to ‘Settings > Manage Accounts’ and select the account you want to change
  2. Select ‘Change Mailbox Sync Settings’
  3. Select ‘Any Time’ under ‘Download email from’ to see your old mail
  4. Restart the computer or phone and check if the error is fixed.

Solution 5:Uninstall or Re-Install Mail App

  1. Open ‘Start;
  2. Search for ‘Windows PowerShell’
  3. Right click and select ‘Run as Administrator’
  4. Type, ‘Get-AppxPackageMicrosoft.windowscommunicationsapps|Remove- AppxPackage’

Note: Doing the above action will remove both the mail and Calendar app. You need to reinstall it again from the Windows Store.

  1. Open Windows Store and reinstall Mail app
  2. Search ‘Mail and Calendar’
  3. Go to ‘Mail app’
  4. Click the ‘Install’ button to reinstall the app
  5. Go back to start before opening the Mail app and complete the startup
  6. Restart the computer and check if the error has resolved.