Article ID: 296248 - View products that this article applies to.
This article was previously published under Q296248
When you attempt to install Snapshot viewer 9.0, you receive the following error message:
MFC42.dll file is in use
This behavior occurs when a program attempts to modify the Mfc42.dll file . It can occur with any program written in Visual C++ that uses the Microsoft Foundation Class Library 4.2.
To work around this issue, install Snapshot viewer 8.0 (Snpvw80.exe). You have to first quit all programs that may be using MFC42.dll. To do so, use one of the following methods listed.
Method 1NOTE: This method applies only to computers running Microsoft Windows NT or Microsoft Windows 2000.
Mfc42.dll (Microsoft Foundation Class Library 4.2) is a run-time file that is used by all programs written in Visual C++ currently running on your computer. While a program that uses this file is active, no other program can overwrite this file.
Article ID: 296248 - Last Review: January 31, 2007 - Revision: 3.2
Retired KB Content Disclaimer
This article was written about products for which Microsoft no longer offers support. Therefore, this article is offered "as is" and will no longer be updated.