User Profile Synchronization Service SP2013 stuck on starting after upgrade from SP2010 to SP2013

Hello Folks,

I am in the process of upgrading our SharePoint Farm from 2010 to 2013. recently i have upgraded my User Profile Service and had trouble starting the UPS Synchronization Service which I spent hours trying to solve this issue. The UPS service application requires an encryption key that is stored separately from the database and is needed if you want to upgrade the User Profile Sync database.

steps to solve this issue.

Export the key from your SP2010 Farm:

just run the command prompt and execute this command.

%Program Files%Microsoft Office Servers14.0Synchronization ServiceBinmiiskmu.exe

Once you run this command Follow the prompt with your Farm Account credentials.

 

1

Copy the key file to the 2013 Farm

Import the Encryption Key on the SP2013 Farm:

Open a command Prompt from this location:

%Program Files%Microsoft Office Servers15.0Synchronization ServiceBin

Type the following: (Yes including the GUID)

miiskmu.exe /i YourFilePathwithFilename  {0E19E162-827E-4077-82D4-E6ABD531636E}

You should receive a message stating that the import was successful.

Start the UPS Sync Service

Starting the Service through CA then worked for me.

 

Hope this Help 🙂

Happy SharePointing

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