OL98: (IMO) ErrMsg: The Rsabase.dll Does Not Match the Signature

ID: Q193002

The information in this article applies to:

Microsoft Outlook 98

NOTE: These procedures only apply if you have installed Outlook with the Internet Mail Only option. To determine your installation type, on the Help menu click About Microsoft Outlook. In About Microsoft Outlook you should see "Internet Mail Only" if you have the Internet Mail Only option installed.

SYMPTOMS

During setup of Microsoft Outlook 98 IMO, if you choose to replace newer files with older ones, you may receive the following error message:

CAPI: The install failed. The rsabase.dll file that is being installed doesn't match the signature file or the value in the registry.

Click OK and Setup will report that it was successful.

NOTE: This issue only occurs if you have Microsoft Windows NT 4.0 and Service Pack 4 installed.

CAUSE

Outlook Setup overwrites the files Rsabase.dll and Rsaenh.dll. This is done during the installation of the Microsoft Internet Explorer 4.01 components.

RESOLUTION

To fix the problem re-install NT 4.0 Service Pack 4. This will update the overwritten files with the correct versions.

STATUS

Microsoft has confirmed this to be a problem in the Microsoft products listed at the beginning of this article.

MORE INFORMATION

During setup of Outlook you are asked if you wish overwrite the files, Rsabase.dll and Rsaenh.dll, with older ones. If you click Yes, the error message will appear. Once you click OK, Setup will finish and will prompt you to restart.

The setup program leads you to believe that the installation was successful. In fact, the files installed by Internet Explorer 4.01 render S/MIME inoperative.

Additional query words: 98

Keywords : EvnOs
Version : WINDOWS:
Platform : WINDOWS
Issue type : kbbug