outlook not connecting to office 365 post migration

#Outlook not connecting to office 365 post migration archive
#Outlook not connecting to office 365 post migration password

Sign-in issues may arise if the username and password values in the CSV file for any user are incorrect or have additional space, which is counted as a character. The CSV file should contain information in the following the issues, re-upload the CSV, and start the IMAP Migration batch. Open the CSV file you uploaded and check the values in the EmailAddress column for specified users. If you still encounter the error, it could be your CSV file that needs an inspection. In such a case, create a mailbox in Office 365 or Microsoft 365 with the email address specified in error and then start the migration batch again. Create a recipient of the appropriate type for this migration on the target and try again. If the IMAP Migration batch starts, but you encounter an error,Ī recipient wasn't found for on the target. Issue 2: Recipients not Found on The Target Server

The IMAP Migration batch starts but encounters issuesįollowing are the issues that may arise in the situations mentioned above, along with steps and solutions to troubleshoot those issues during the IMAP Migration to Office 365.

Otherwise, click the + icon to create a new migration batch.Īt this stage, you may encounter two situations, Select the batch and click the play icon to start the migration batch if the batch already exists. To create an IMPA Migration batch or check if a migration batch already exists, open Exchange Admin Center in Office 365 and go to Recipients> Migration (Classic Exchange Admin Center). You may add users individually or in bulk based on your preferences.

You must add users to Microsoft 365 or Office 365 tenants and assign licenses before IMAP Migration.

In IMAP Migration, you can migrate up to 500,000 mail items from the user's mailbox to the destination Office 365 tenant in descending order.

However, this can be avoided by disabling the Messaging Records Management (MRM) and archival policies before starting IMAP migration.

#Outlook not connecting to office 365 post migration archive

Any mail item deleted or moved to the archive will be flagged during the migration process, resulting in missing mail items on the target Office 365 tenant.IMAP migration only works when your source email system supports IMAP protocol.However, this limit can be increased to up to 150 MB. IMAP migration supports messages with a maximum 35MB size.It can't migrate mail items, such as contacts, calendar items, or tasks. IMAP migration can only migrate users' mail folders and items, such as Inbox.Troubleshooting IMAP Migration to office 365īefore planning or starting IMAP migration to Office 365, you need to keep following in mind to avoid issues later, In this article, we will discuss and share some troubleshooting steps to resolve common IMAP migration issues while migrating user mailboxes from an on-premises Exchange Server to Microsoft 365 or Office 365. Migration is slow or taking longer than expected.Duplicate migration batches (migration batch already exists).

Connection with target server could not be completed or timed out.Recipients not found on the target server.Can't create or start an IMAP migration batch.These IMAP migration issues could be any of the following, However, you may encounter a few IMAP migration issues that can prevent you from moving user mailboxes from on-premises Exchange Server to Office 365. I have enabled the ExcludeLastKnownGoodUrl registry setting as per this article ( ) and get no further.After adding users in Microsoft 365 or Office 365 and assigning licenses, you can use Internet Message Access Protocol or IMAP Migration to migrate the content of user mailboxes from your current on-premises Exchange server with IMAP4 client connectivity or any other IMAP-enabled email server, such as Outlook, Gmail, Hotmail, etc., to Microsoft 365 or Office 365.Īdministrators can use the Exchange Admin Center (GUI-based) in Exchange Server 2013 and later or Exchange Management Shell (CLI-based) in Exchange 2010 SP1 and later versions to start IMAP Migration to Office 365 or Microsoft 365. If I delete the users mail profile and start from scratch it will configure properly. That prompt continually pops, presumably from the on prem server in which we are trying to connect to something that does not exist there any longer. However if a mail profile is set up for an on-prem mailbox and then that mailbox is migrated the next time the user opens Outlook, it will be disconnected and the user received an authentication prompt.

Outlook clients are running Windwith the click-to-run version of Office installed in shared licensing mode (VDI non persistent desktops).Īutodiscover for an on-prem mailbox and cloud mailboxes works perfectly fine. Also a single Exchange 2016 'hybrid' server. Quick brief on environment: On-Prem environment consists of 2 mailbox servers (DAG) and 2 clients access servers all of which are Exchange 2010 SP3 with latest Roll-up.