Notice: This website is an unofficial Microsoft Knowledge Base (hereinafter KB) archive and is intended to provide a reliable access to deleted content from Microsoft KB. All KB articles are owned by Microsoft Corporation. Read full disclaimer for more details.

PRB: Exception in Ifc_com.dll Module

View products that this article applies to.

This article was previously published under Q307862

↑ Back to the top


When you use Visual Studio .NET with the MERANT PVCS Version Manager, you may receive the following error message:
Unhandled exception has been caught by the Visual Studio Watson exception filter
The exception occurs in the Ifc_com.dll module. Alternatively, when you use the Recalculate Hyperlinks operation in Visual InterDev or FrontPage, the system stops responding (hangs).

If you use a debugger such as Dr. Watson, the beginning of the call stack appears as follows:

↑ Back to the top


This problem occurs because the Ifc_com.dll module is a MERANT dynamic-link library (DLL) and is installed with the PVCS source control product.

↑ Back to the top


Although you can unregister this DLL to prevent this crash from occurring, you may experience unexpected results in the MERANT product if you unregister this DLL. Microsoft recommends that you contact MERANT to resolve this problem. For MERANT contact information, see the "More Information" section.

To unregister the Ifc_com.dll file, click Start, click Run, and then type the following command in the Open box:
regsvr32 /u drive letter:\path\ifc_com.dll
where drive letter and path are the drive and the path of the Ifc_com.dll file.

To register the Ifc_com.dll file, use the following command:
regsvr32 drive letter:\path\ifc_com.dll

↑ Back to the top

More information

You do not have to examine the call stack dump file to use this article. If you experience an unhandled exception when you use Visual Studio .NET, or if the system stops responding when you use FrontPage or Visual InterDev, and if you have MERANT PVCS Version Manager, you may want to use the resolution.

MERANT Technical Support requests that all customers, regardless of customer service contract status, contact them for internal document identification number 42747.

You can contact MERANT Technical Support at, or at (800) 443-1601, or at (503) 617-2777.

There is a patch available from MERANT to resolve this behavior. If you are a registered MERANT user, you can locate a reference to this patch by visiting the MERANT Web site (, and then searching their knowledge base for article 512299.

Microsoft provides third-party contact information to help you find technical support. This contact information may change without notice. Microsoft does not guarantee the accuracy of this third-party contact information.

The third-party products that are discussed in this article are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, regarding the performance or reliability of these products.

↑ Back to the top

Keywords: KB307862, kbprb

↑ Back to the top

Article Info
Article ID : 307862
Revision : 6
Created on : 2/12/2007
Published on : 2/12/2007
Exists online : False
Views : 450