Cant Migrate Two Mailboxes - too many transient failures

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New Contributor

I am currently running in a hybrid environment with 2016 exchange on-premises.

 

I am around a third of the way through my migration of Mailboxes into the O365 and have succesfully migrated around 700 Mailboxes.

 

The problem i have is with now 2 Mailboxes that i cant migrate.

they both have the same error "The job encountered too many transient failures (61) and is quitting. The most common failure is CommunicationErrorTransientException/CommunicationException/SocketException with the hit count 46"

 

theses mailboxes were from different batches and i have also tried to move them via the GUI and also PowerShell as individual moves, unfortunately that fails as well.

 

I have tried setting the Bad item limit to 100 , this did not help.

 

a snippet of the error

equest processing continued, stage IncrementalSync.

4/09/2020 6:56:56 AM [ME2PR01MB5108] Stage: IncrementalSync. Percent complete: 95.

4/09/2020 6:56:56 AM [ME2PR01MB5108] Transient error CommunicationErrorTransientException has occurred. The system will retry (17/60, 17/604).

4/09/2020 6:57:29 AM [ME2PR01MB5108] The Microsoft Exchange Mailbox Replication service 'ME2PR01MB5108.ausprd01.prod.outlook.com' (15.20.3348.16 ServerCaps:07FFFFFF, ProxyCaps:1FFFFFFFFFC7FD6DFDBF5FFFFFCB07EFFF, MailboxCaps:, legacyCaps:07FFFFFF) is examining the request.

4/09/2020 6:57:29 AM [ME2PR01MB5108] Content from the Shard mailbox (Mailbox Guid: 91a0ae49-ad12-4ef8-9452-5e92ec53a3a1, Database: 6e462a43-2910-4af3-95a2-3044c001d19b) will be merged into the target mailbox.

4/09/2020 6:57:29 AM [ME2PR01MB5108] Connected to target mailbox 'newdomain.onmicrosoft.com\b7030874-2fc1-4ed1-9248-18e7c0e374e1 (Primary)', database 'AUSPR01DG035-db016', Mailbox server 'ME2PR01MB5108.ausprd01.prod.outlook.com' Version 15.20 (Build 3348.0).

4/09/2020 6:57:30 AM [ME2PR01MB5108] Connected to source mailbox 'newdomain.onmicrosoft.com\b7030874-2fc1-4ed1-9248-18e7c0e374e1 (Primary)', database 'Students_2022', Mailbox server 'SCHOOL-EXCHANGE.school.local' Version 15.1 (Build 1979.0), proxy server 'SCHOOL-EXCHANGE.school.local' 15.1.1979.3 ServerCaps:, ProxyCaps:, MailboxCaps:, legacyCaps:0FFD6FFFBF5FFFFFCB07FFFF.

4/09/2020 6:57:31 AM [ME2PR01MB5108] Request processing continued, stage IncrementalSync.

4/09/2020 6:57:31 AM [ME2PR01MB5108] Stage: IncrementalSync. Percent complete: 95.

4/09/2020 6:57:31 AM [ME2PR01MB5108] Transient error CommunicationErrorTransientException has occurred. The system will retry (18/60, 18/604).

4/09/2020 6:58:03 AM [ME2PR01MB5108] The Microsoft Exchange Mailbox Replication service 'ME2PR01MB5108.ausprd01.prod.outlook.com' (15.20.3348.16 ServerCaps:07FFFFFF, ProxyCaps:1FFFFFFFFFC7FD6DFDBF5FFFFFCB07EFFF, MailboxCaps:, legacyCaps:07FFFFFF) is examining the request.

4/09/2020 6:58:03 AM [ME2PR01MB5108] Content from the Shard mailbox (Mailbox Guid: 91a0ae49-ad12-4ef8-9452-5e92ec53a3a1, Database: 6e462a43-2910-4af3-95a2-3044c001d19b) will be merged into the target mailbox.

4/09/2020 6:58:03 AM [ME2PR01MB5108] Connected to target mailbox 'newdomain.onmicrosoft.com\b7030874-2fc1-4ed1-9248-18e7c0e374e1 (Primary)', database 'AUSPR01DG035-db016', Mailbox server 'ME2PR01MB5108.ausprd01.prod.outlook.com' Version 15.20 (Build 3348.0).

4/09/2020 6:58:04 AM [ME2PR01MB5108] Connected to source mailbox 'newdomain.onmicrosoft.com\b7030874-2fc1-4ed1-9248-18e7c0e374e1 (Primary)', database 'Students_2022', Mailbox server 'SCHOOL-EXCHANGE.school.local' Version 15.1 (Build 1979.0), proxy server 'SCHOOL-EXCHANGE.school.local' 15.1.1979.3 ServerCaps:, ProxyCaps:, MailboxCaps:, legacyCaps:0FFD6FFFBF5FFFFFCB07FFFF.

4/09/2020 6:58:04 AM [ME2PR01MB5108] Request processing continued, stage IncrementalSync.

4/09/2020 6:58:04 AM [ME2PR01MB5108] Stage: IncrementalSync. Percent complete: 95.

4/09/2020 6:58:04 AM [ME2PR01MB5108] Transient error CommunicationErrorTransientException has occurred. The system will retry (19/60, 19/604).

4/09/2020 6:58:34 AM [ME2PR01MB5108] The Microsoft Exchange Mailbox Replication service 'ME2PR01MB5108.ausprd01.prod.outlook.com' (15.20.3348.16 ServerCaps:07FFFFFF, ProxyCaps:1FFFFFFFFFC7FD6DFDBF5FFFFFCB07EFFF, MailboxCaps:, legacyCaps:07FFFFFF) is examining the request.

4/09/2020 6:58:35 AM [ME2PR01MB5108] Content from the Shard mailbox (Mailbox Guid: 91a0ae49-ad12-4ef8-9452-5e92ec53a3a1, Database: 6e462a43-2910-4af3-95a2-3044c001d19b) will be merged into the target mailbox.

4/09/2020 6:58:35 AM [ME2PR01MB5108] Connected to target mailbox 'newdomain.onmicrosoft.com\b7030874-2fc1-4ed1-9248-18e7c0e374e1 (Primary)', database 'AUSPR01DG035-db016', Mailbox server 'ME2PR01MB5108.ausprd01.prod.outlook.com' Version 15.20 (Build 3348.0).

4/09/2020 6:58:35 AM [ME2PR01MB5108] Connected to source mailbox 'newdomain.onmicrosoft.com\b7030874-2fc1-4ed1-9248-18e7c0e374e1 (Primary)', database 'Students_2022', Mailbox server 'SCHOOL-EXCHANGE.school.local' Version 15.1 (Build 1979.0), proxy server 'SCHOOL-EXCHANGE.school.local' 15.1.1979.3 ServerCaps:, ProxyCaps:, MailboxCaps:, legacyCaps:0FFD6FFFBF5FFFFFCB07FFFF.

4/09/2020 6:58:36 AM [ME2PR01MB5108] Request processing continued, stage IncrementalSync.

4/09/2020 6:58:36 AM [ME2PR01MB5108] Stage: IncrementalSync. Percent complete: 95.

4/09/2020 6:58:36 AM [ME2PR01MB5108] Transient error CommunicationErrorTransientException has occurred. The system will retry (20/60, 20/604).

4/09/2020 6:59:07 AM [ME2PR01MB5108] The Microsoft Exchange Mailbox Replication service 'ME2PR01MB5108.ausprd01.prod.outlook.com' (15.20.3348.16 ServerCaps:07FFFFFF, ProxyCaps:1FFFFFFFFFC7FD6DFDBF5FFFFFCB07EFFF, MailboxCaps:, legacyCaps:07FFFFFF) is examining the request.

4/09/2020 6:59:07 AM [ME2PR01MB5108] Content from the Shard mailbox (Mailbox Guid: 91a0ae49-ad12-4ef8-9452-5e92ec53a3a1, Database: 6e462a43-2910-4af3-95a2-3044c001d19b) will be merged into the target mailbox.

4/09/2020 6:59:07 AM [ME2PR01MB5108] Connected to target mailbox 'newdomain.onmicrosoft.com\b7030874-2fc1-4ed1-9248-18e7c0e374e1 (Primary)', database 'AUSPR01DG035-db016', Mailbox server 'ME2PR01MB5108.ausprd01.prod.outlook.com' Version 15.20 (Build 3348.0).

4/09/2020 6:59:08 AM [ME2PR01MB5108] Connected to source mailbox 'newdomain.onmicrosoft.com\b7030874-2fc1-4ed1-9248-18e7c0e374e1 (Primary)', database 'Students_2022', Mailbox server 'SCHOOL-EXCHANGE.school.local' Version 15.1 (Build 1979.0), proxy server 'SCHOOL-EXCHANGE.school.local' 15.1.1979.3 ServerCaps:, ProxyCaps:, MailboxCaps:, legacyCaps:0FFD6FFFBF5FFFFFCB07FFFF.

 

 

 

1 Reply
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@AshJor 

 

Hi, do you have the option to move the mailbox to another on-premises mailbox database first, and then migrate to Exchange Online?  I've seen that work sometimes when this error occurs.

 

Are you completely Exchange 2016 on-prem or do you have some 2010/2013 there too?  If so, try migrating to the Exchange 2016 server first.  I know by the letter of the law you shouldn't have mailboxes on the hybrid server (if you are using the free hybrid licence key), but this would be a temporary move only.