Removing Microsoft® SQL Server™ OLAP Services will delete the repository file (msmdrep.mdb) which contains cube metadata. We recommend that you make a backup copy of this file before you remove OLAP Services. After installation, you will need to reprocess all defined cubes to re-create the cube data files.
If you intend to remove and then reinstall OLAP Services, you must restart your computer before starting the reinstallation. The removal process marks some files for deletion the next time the computer starts; these files must be removed before the next installation replaces them.
If the removal process fails to complete successfully, install OLAP Services again, and then restart the removal process. You may have to manually delete remaining files and folders after running the Add/Remove Programs application in Control Panel.