When you try to mount a database in Microsoft Exchange Server, you may receive the following error message:
An internal processing error has occurred. Try restarting the Exchange System Manager or the Microsoft Exchange Information Store service, or both.
ID no: C1041724
Exchange System Manager
This issue can occur if there is insufficient free disk space on the drive that contains the databases that you are trying to mount.
To resolve this issue, free some disk space on the drive, and then try to mount the database again.
If the Exchange database files are the only files that are located on the hard disk, you may have to perform an offline defragmentation of the databases to free disk space. For more information about how to do this, click the following article numbers to view the articles in the Microsoft Knowledge Base:
How to defragment Exchange databases
How to run Eseutil on a computer without Exchange Server
If the Exchange transaction log files are also located on this drive, and if there are too many logs, you may be able to free disk space by removing unnecessary log files. For more information about how to do this, click the following article number to view the article in the Microsoft Knowledge Base:
How to remove Exchange Server transaction log files
When this issue occurs, the following events may be logged in the Application log: