The Store 'MSPST MS' was not opened or Store 'MSEMS' was not opened errors might be seen in the ExMerge log file (ExMerge.log) after merging data from the recovery storage group has failed. These errors typically indicate a language localization mismatch problem. The errors can usually be resolved by entering the correct localized names for the MAPI services on which ExMerge depends.
To discover and configure the correct names for MAPI services
In the ExMerge.ini file that is bundled with the ExMerge tool, find the LoggingLevel line and set its value to 3 instead of 0. This enables verbose logging of ExMerge errors.
Run ExMerge again to generate the error condition again. To reduce the output to the log file, select only a single mailbox to merge .
In the ExMerge.log file, find the lines that begin with "Checking service" and that are followed by a "was not opened" error. For example:
[15:02:19] Checking service 'Microsoft Exchange Message Store'
[15:02:19] Checking service 'Personal Folders'
[15:02:19] Store 'MSPST MS' was not opened.
[15:02:19] Ending Routine: EDKRoutines::openStores)
In the ExMerge.ini file, find LocalisedExchangeServerServiceName and remove the semicolon ( that precedes the line. Then set the value to the service name displayed in the ExMerge.log file. For example:
LocalisedExchangeServerServiceName = Microsoft Exchange Message Store
In the ExMerge.ini file, find LocalisedPersonalFoldersServiceName and remove the semicolon ( that precedes the line. Then set the value to the service name displayed in the ExMerge.log file. For example:
LocalisedPersonalFoldersServiceName = Personal Folders