Excel 2010 – Object library Invalid

If you have experiencing a problem with Ms. Excel 2010

“Object library invalid or contains references to object definitions that could not be found”

like picture below :

Maybe this solution can solved the problem :

Unregister and then register back the mscomctl.ocx.

Please copy  below script into notepad and then save into mscomctl.bat

regsvr32 /u mscomctl.ocx

regsvr32 mscomctl.ocx

After copy that script, run mscomctl.ocx using administrator privilege.

I hope this solution will help you, if you’re found same problem. 😀


Reference Link :

http://support.microsoft.com/kb/2703186 (for another method to solved this problem)


  1. sash · June 18, 2012

    thanks. this helps.

    Also refer to this one, found this when searching online. – http://support.microsoft.com/kb/2703186

    • akbaraji · June 18, 2012

      Thank you sash.. I will add that link into my references link in my post 🙂

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