You move a mailbox from an on-premises Exchange 2010 or Exchange 2007 environment that has MRM 1.0 policies set up to Exchange Server 2013. However, the Managed Folder Assistant doesn't work as expected, and retention policies aren't applied to the mailbox. Additionally, the following event ID 10021 is logged in the Application log in Event Viewer:
Log Name: Application
Source: MSExchangeMailboxAssistants
Date: <Date and Time>
Event ID: 10021
Task Category: Managed Folder Assistant
Level: Error
Keywords: Classic
User: N/A
Computer: <ComputerName>
Description:
The MRM Assistant will skip processing mailbox 'OW4:5c3790e2-4ec2-4510-b8b7-5bc861e92533:<ComputerName>. Exception details: 'Microsoft.Exchange.Assistants.TransientMailboxException ---> Microsoft.Exchange.InfoWorker.Common.ELC.ELCFolderSyncException:
Failed to synchronize the messaging records management settings on managed folder Managed Folders in mailbox <mailbox> with the settings in Active Directory.
at Microsoft.Exchange.InfoWorker.Common.ELC.ProvisionedFolderCreator.SaveELCFolder(Folder folder, Boolean create)
at Microsoft.Exchange.InfoWorker.Common.ELC.ElcMailboxHelper.RemoveElcFolder(Boolean userIsOnRetentionPolcyTags, MailboxSession mailboxSession, StoreId folderId, Dictionary`2 allAdTags, UpgradeStatus& status)
at Microsoft.Exchange.InfoWorker.Common.ELC.ElcMailboxHelper.ScrubElcMailbox(Boolean userIsOnRetentionPolcyTags, MailboxSession mailboxSession, Dictionary`2 allAdTags, UpgradeStatus& status)
at Microsoft.Exchange.MailboxAssistants.Assistants.ELC.TagProvisioner.InvokeInternal(MailboxDataForTags mailboxDataForTags)
at Microsoft.Exchange.MailboxAssistants.Assistants.ELC.TagProvisioner.Invoke(MailboxDataForTags mailboxDataForTags)
at Microsoft.Exchange.MailboxAssistants.Assistants.ELC.ElcTagSubAssistant.InvokeInternal(MailboxSession mailboxSession, MailboxDataForTags mailboxDataForTags)
at Microsoft.Exchange.MailboxAssistants.Assistants.ELC.ElcTagSubAssistant.Invoke(MailboxSession mailboxSession, MailboxDataForTags mailboxDataForTags)
at Microsoft.Exchange.MailboxAssistants.Assistants.ELC.ELCAssistant.InvokeCore(MailboxSession mailboxSession, StatisticsLogEntry logEntry, ElcParameters parameters)
at Microsoft.Exchange.Common.IL.ILUtil.DoTryFilterCatch(TryDelegate tryDelegate, FilterDelegate filterDelegate, CatchDelegate catchDelegate)
Source: MSExchangeMailboxAssistants
Date: <Date and Time>
Event ID: 10021
Task Category: Managed Folder Assistant
Level: Error
Keywords: Classic
User: N/A
Computer: <ComputerName>
Description:
The MRM Assistant will skip processing mailbox 'OW4:5c3790e2-4ec2-4510-b8b7-5bc861e92533:<ComputerName>. Exception details: 'Microsoft.Exchange.Assistants.TransientMailboxException ---> Microsoft.Exchange.InfoWorker.Common.ELC.ELCFolderSyncException:
Failed to synchronize the messaging records management settings on managed folder Managed Folders in mailbox <mailbox> with the settings in Active Directory.
at Microsoft.Exchange.InfoWorker.Common.ELC.ProvisionedFolderCreator.SaveELCFolder(Folder folder, Boolean create)
at Microsoft.Exchange.InfoWorker.Common.ELC.ElcMailboxHelper.RemoveElcFolder(Boolean userIsOnRetentionPolcyTags, MailboxSession mailboxSession, StoreId folderId, Dictionary`2 allAdTags, UpgradeStatus& status)
at Microsoft.Exchange.InfoWorker.Common.ELC.ElcMailboxHelper.ScrubElcMailbox(Boolean userIsOnRetentionPolcyTags, MailboxSession mailboxSession, Dictionary`2 allAdTags, UpgradeStatus& status)
at Microsoft.Exchange.MailboxAssistants.Assistants.ELC.TagProvisioner.InvokeInternal(MailboxDataForTags mailboxDataForTags)
at Microsoft.Exchange.MailboxAssistants.Assistants.ELC.TagProvisioner.Invoke(MailboxDataForTags mailboxDataForTags)
at Microsoft.Exchange.MailboxAssistants.Assistants.ELC.ElcTagSubAssistant.InvokeInternal(MailboxSession mailboxSession, MailboxDataForTags mailboxDataForTags)
at Microsoft.Exchange.MailboxAssistants.Assistants.ELC.ElcTagSubAssistant.Invoke(MailboxSession mailboxSession, MailboxDataForTags mailboxDataForTags)
at Microsoft.Exchange.MailboxAssistants.Assistants.ELC.ELCAssistant.InvokeCore(MailboxSession mailboxSession, StatisticsLogEntry logEntry, ElcParameters parameters)
at Microsoft.Exchange.Common.IL.ILUtil.DoTryFilterCatch(TryDelegate tryDelegate, FilterDelegate filterDelegate, CatchDelegate catchDelegate)