The type libraries referenced in the Windows Registry do not match the installed type libraries.

This rare condition is usually caused by a mixed version Office installation, such as

  • Office 2007 applications and Microsoft Project 2010
  • Office 2010 applications and Lync 2013
The later versioned Office components place registry keys on the computer which cause Windows to look for the wrong version of the corresponding Office Interop DLL (such as looking for Excel 2013 when Excel 2010 is installed after installing Lync 2013 with Office 2010).

Depending on the mix of applications, a repair install of Office may alleviate the issue. In other scenarios the registry must be manipulated manually to fix the configuration problem introduced by the mixed version Office installation.

Please note that manipulating the registry can cause problems with the operation of the computer. You should seek help of an IT professional to undertake the repair steps.
We strongly advise to make a backup of the computer registry before manipulating the registry.

We do not offer any registry scripts to alleviate the issue, but below is a list of forum posts and web pages that offer several solutions, as well as exploring the issue in more depth.

Please note that none of these links are maintained by us. We are not responsible for the content of these pages, as they are outside our domain.

IT and Administrative Reference

Administratively Preventing Automatic Update Checking
Excel Type Library Error

Other Resources

Table of Contents