You don't have permission to create an entry in this folder error when you add contacts to a contacts folder

Original KB number:   4514534

Symptoms

After a G Suite migration to Microsoft 365, users receive the following error message when they try to create or edit their contacts in the Outlook desktop client:

You don't have permission to create an entry in this folder.  Right-click the folder, and then click Properties to check your permissions for the folder.  See the folder owner or your administrator to change your permissions.

error message

Cause

This error occurs because the Contacts folder was flagged as ReadOnly by the service during the migration.

Status - Service fix

A service side fix has been deployed. The fixed version is 15.20.2132.000​ or a later version.

Note

The service side fix will be available only for new migrations. Migrations that are run before this update must follow the workaround steps in this article.

Workaround

To work around this issue, manually set this property for affected users through MFCMAPI. To do this, follow these steps:

  1. Download MFCMAPI.

  2. Start the MfcMapi.exe program that you downloaded, and then select OK.

  3. On the Tools menu, select Options.

  4. Select the check boxes next to the following options, and then select OK:

    • Use the MDB_ONLINE flag when calling Open MsgStore
    • Use the MAPI_NO_CACHE flag when calling OpenEntry
  5. On the Session menu, select Logon.

  6. In the Profile Name list, select the profile for the mailbox, and then select OK.

  7. Double-click the appropriate Microsoft Exchange Message Store.

  8. In the navigation pane, select Root Container.

  9. In the navigation pane, expand Root Container, expand Top of Information Store, and then select Contacts.

  10. In the properties pane on the right, look for the PR_EXTENDED_FOLDER_FLAGS property, double-click it, set the binary value to 010400001000, and then select OK.