Troubleshoot Active Migration Errors

Applies to: Office 365 for professionals and small businesses, Office 365 for enterprises, Live@edu

Topic Last Modified: 2009-11-30

After you start a migration batch, Outlook Live logs any errors that occur during the migration. These errors are listed in the Error Report for E-mail Migration. To display this report, select My Organization > Users & Groups > E-Mail Migration, and in the Active Mailbox Migration pane, click Active mailbox migration errors. These errors are also included in the MigrationErrors.csv file that is attached to the status e-mail message sent after the migration batch is complete.

What happens when migration errors are found?

Errors found after you start a migration batch prevent e-mail in the affected mailboxes from being migrated. You have to wait until the current migration batch is done before you can fix these errors, submit a new CSV file, and start a new migration batch.

Suggested solutions for common migration errors

The following table describes common migration errors and suggested solutions.

Error	Suggested solutions
Outlook Live couldn't sign in to the user account on the IMAP messaging system.	Confirm that the account still exists. Verify that you're using the correct user name and password for the account in the CSV file. If you're using an administrator account with super-user credentials: Verify that you're using the correct user name and password for the administrator account in the CSV file. Verify that you're using the correct user name for the user account in the CSV file. Verify that the administrator account has the necessary permissions to access the user account.
An Outlook Live mailbox wasn't found for the user.	Confirm that the Outlook Live mailbox exists. If it doesn't, create an Outlook Live mailbox for the user. Verify that you're using the correct Windows Live ID (SMTP address) for the user's Outlook Live mailbox.
The user's mailbox has already been migrated.	If you run a new migration batch, in the CSV file, remove the rows for mailboxes that have already been migrated.
Outlook Live couldn't connect to the IMAP server.	Verify that the IMAP service is running on the IMAP server. Verify that the IMAP server is available and that you can connect to it. Tip Use an IMAP client to connect to the IMAP server. Use the same connection settings that you used when you ran the migration batch. Or use the PING command to test whether you can communicate with the IMAP server.
The user's Outlook Live mailbox is full.	Free up space in the user's Outlook Live mailbox.

Use the MigrationErrors.csv file to fix migration errors

Use the MigrationErrors.csv file to identify and fix errors. Use information in the ErrorMessage column to resolve the problem that caused a row to fail. Then start a new migration batch and submit a new CSV file that contains the rows that have been fixed.