MAPISTUB.DLL file is missing
[This topic is intended to address a specific issue called out by the Exchange Server Analyzer Tool. You should apply it only to systems that have had the Exchange Server Analyzer Tool run against them and are experiencing that specific issue. The Exchange Server Analyzer Tool, available as a free download, remotely collects configuration data from each server in the topology and automatically analyzes the data. The resulting report details important configuration issues, potential problems, and nondefault product settings. By following these recommendations, you can achieve better performance, scalability, reliability, and uptime. For more information about the tool or to download the latest versions, see "Microsoft Exchange Analyzers" at http://go.microsoft.com/fwlink/?linkid=34707.]
Topic Last Modified: 2005-11-18
The Microsoft® Exchange Server Analyzer Tool queries the CIM_Datafile Microsoft Windows® Management Instrumentation (WMI) class to check for the presence of several core Exchange binary files:
Gapi32.dll (checked in both the System32 folder and the \Exchsrvr\bin folder)
Mapi32.dll (checked in both the System32 folder and the \Exchsrvr\bin folder)
If the Exchange Server Analyzer finds that one or more of the files are missing, an error is displayed. To remedy this error, install the latest service pack or rollup for your version of Exchange. If this error persists, run Exchange 2000 Server or Exchange Server 2003 Setup and select Re-install. Running Setup in Re-install mode installs only binary files. It does not remove or reset any user data or configuration data. If you reinstall Exchange Server, you must also reinstall any Exchange service packs or hotfixes that were installed.
To reinstall Exchange 2000 Server or Exchange Server 2003
Log on to the server on which you want to reinstall Exchange. Insert the Exchange 2000 Server or Exchange Server 2003 CD into your CD-ROM drive.
On the Start menu, click Run, and then type <drive>:\setup\i386\setup, where <drive> is your CD-ROM drive.
On the Welcome to the Microsoft Exchange Installation Wizard page, click Next.
On the License Agreement page, read the agreement. If you agree to the terms, click I agree, and then click Next.
On the Product Identification page, type your 25-digit product key, and then click Next.
On the Component Selection page, in the Action column, use the drop-down arrow next to the Microsoft Exchange node, and select Re-install, and then click Next.
For more information about the latest Exchange Server 2003 service packs, update rollups, and add-ins, see "Downloads for Exchange Server 2003" (http://go.microsoft.com/fwlink/?LinkId=25097).
For more information about the latest Exchange 2000 Server service packs, update rollups, and add-ins, see "Downloads for Exchange 2000 Server" (http://go.microsoft.com/fwlink/?LinkId=33457).