DOCUMENT:Q194820 18-APR-1999 [exchange] TITLE :XADM: Cannot Install 5.5 After Internet Explorer 4.01 SP1 PRODUCT :Microsoft Exchange PROD/VER:winnt:5.5 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Exchange Server, version 5.5 ------------------------------------------------------------------------------- SYMPTOMS ======== When you attempt to install Microsoft Exchange Server 5.5 on an Exchange Server 5.0 computer on which the Internet Mail Service is installed and Microsoft Internet Explorer 4.01 Service Pack 1 (SP1) with Outlook Express has been applied, the following error message may be displayed, and the installation process may not complete successfully: Self registration of the DLL c:\winnt\system32\inetcomm.dll failed. CAUSE ===== When you install Exchange Server 5.5 on an Exchange Server 5.0 computer on which the Internet Mail Service is installed, the Setup program attempts to register the Inetcomm.dll file. During this registration process, the Inetcomm.dll file attempts to load the Msoert.dll file. When you apply Internet Explorer 4.01 SP1 with Outlook Express, new versions of the Inetcomm.dll and Msoert.dll files are copied to your hard disk. When the Exchange Server 5.5 Setup program attempts to register the Inetcomm.dll file, it uses the new version of the Inetcomm.dll file on your hard disk. However, when the Inetcomm.dll file attempts to load the Msoert.dll file, it uses the older version of the Msoert.dll file on the Exchange Server 5.5 CD-ROM. This file mismatch prevents the Inetcomm.dll file from being registered. WORKAROUND ========== To work around this problem, replace the Inetcomm.dll and Msoert.dll files that were copied to your hard disk when you applied Internet Explorer 4.01 SP1 with the versions of the files on the Exchange Server 5.5 CD-ROM. Then, install Exchange Server 5.5. After Exchange Server 5.5 has been installed, replace the Inetcomm.dll and Msoert.dll files from the Exchange Server 5.5 CD-ROM with the versions of the files that were copied to your hard disk when you applied Internet Explorer 4.01 SP1. To do so, follow these steps: 1. Rename the Inetcomm.dll and Msoert.dll files in the Winnt\System32 folder on your hard disk to Inetcomm.new and Msoert.new. 2. Copy the Inetcomm.dll and Msoert.dll files from the Exchange Server 5.5 CD-ROM to the Winnt\System32 folder on your hard disk. 3. Install Exchange Server 5.5. 4. Rename the Inetcomm.dll and Msoert.dll files in the Winnt\System32 folder on your hard disk to Inetcomm.old and Msoert.old. 5. Rename the Inetcomm.new and Msoert.new files in the Winnt\System32 folder on your hard disk to Inetcomm.dll and Msoert.dll. STATUS ====== Microsoft has confirmed this to be a problem in Microsoft Exchange Server version 5.5. Additional query words: ims internet mail connector upgrade imc ====================================================================== Keywords : Technology : kbExchangeSearch kbExchange550 kbZNotKeyword2 Version : winnt:5.5 Issue type : kbbug Solution Type : kbnofix ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 1999.