Exchange 2010 SP3 RU16 update fails with error code 2771

Exchange 2010 SP3 RU16 update fails with following error. Log Name: Application Source: MsiInstaller Date: ******* Event ID: 10005 Task Category: None Level: Error Keywords: Classic User: ******* Computer: ******* Description: Product: Microsoft Exchange Server — The installer encountered an unexpected error while installing this package. This may indicate a problem with this package. The error code is 2771….

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EdgeSync service cannot connect to this subscription because of error “The LDAP server is unavailable”

You configure the EdgeSynchronization in the Exchange 2010 environment but having issues with edge sync and getting following events on the HUB servers. Log Name:      Application Source:        MSExchange EdgeSync Date:          ******** Event ID:      1024 Task Category: Topology Level:         Error Keywords:      Classic User:          N/A Computer:      ********** Description: Failed to connect to the…

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Exchange Server 2016 and Office Online Server Process Flow

Here is the process flow of how Exchange Server handles attachments when integrated with Office Online server. Exchange uses discovery URL to ask Office Online Server which files types it can view and edit. Office Online Server returns table of supported file types. User opens mail with attachment that matches one of the file types Office…

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Cannot enable UM for users

You cannot enable UM (Unified messaging) feature for users and get following errors. Enable-UMMailbox -Identity <> -UMMailboxPolicy <> -Extensions <> -PinExpired:$true -SipResourceIdentifier <> Exception: Mailbox <> couldn’t be initialized for Unified Messaging: There was an error accessing the mailbox using EWS. The requested operation failed with ResponseCode “ErrorInternalServerError”. Details : An internal server error occurred….

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