OL2000: (CW) Lotus cc:Mail 7.x, 8.x Hangs If Outlook Installed

If you install Microsoft Outlook on a computer that has Lotus cc:Mail 7.x or 8.x installed, cc:Mail may stop responding when connecting to a cc:Mail post office and you may receive the following error message: If you click OK, cc:Mail will close.

If you click behind the error message and into the cc:Mail 8.x software, you can access the post office. However, if you create a new message and click send, you may receive the following error message:

Outlook installs new Messaging Application Programming Interface (MAPI) files, which are incompatible with the Lotus cc:Mail transport provided with cc:Mail client. The Lotus cc:Mail clients 7.x/8.x use version 4.x (4.00.993.3 or 4.00.834.839).

The following workaround allows cc:Mail 8.x/7.x to coexist with Outlook:

1. Place a copy of the Outlook Mapisp32.exe file from the Windows\System folder, in the same folder as the Wmail32.exe file.
2. Place a copy of the older Mapi32.dll file, (version 4.00.993.3 from the Office 97 CD, or version 4.00.834.839 extracted from the Lotus cc:Mail CD at <CD-ROM drive>:\winmail\r8win32\win95\wmset1.cab on) in the same folder as the Wmail32.exe file.
3. Keep the Outlook version of Mapi32.dll and Mapisp32.exe, in the Windows\System folder.
4. Restart the computer.

Using the workaround above, you can start two MAPI sessions. One using the Lotus cc:Mail client with Lotus cc:Mail 8.x and the other using the Outlook client with the Microsoft Outlook Support for Lotus cc:Mail.

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