SharePoint JavaScript Error: Library Not Registered

The other day one of my clients upgraded from Outlook 2003 to Outlook 2007.  Since then, whenever she went to her company’s SharePoint site, she received the following error: 


Website error details 

User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0;
.NET CLR 1.1.4322; MS-RTC LM 8; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)
Timestamp: Mon, 4 Jan 2010 18:27:45 UTC

Message: Library not registered.

Line: 1935
Char: 4
Code: 0
URL: http://server/_layouts/1033/init.js?rev=ck%2BHdHQ8ABQHif7kr%2Bj7iQ%3D%3D


Apparently the Outlook upgrade did something to a DLL (removed it?) that SharePoint needs.
If you have just upgraded from Outlook 2003 to Outlook 2007 and you receive a similar error, simply run Office Diagnostics and it should fix the problem!

To run Office Diagnostics follow these steps:
1. Open Microsoft Outlook 2007
2. On the Help menu, click Office Diagnostics
3. Click Continue, and then click Start Diagnostics

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15 Responses to SharePoint JavaScript Error: Library Not Registered

  1. http:// says:

    I had lots of bugs using share point, so no comment here…

  2. Darcy says:

    This was the solution to my issue with that stupid error keeping me from working with my sharepoint site. I inherrited a laptop from someone and had no idea an “upgrade” was performed. Thanks for this–SUPER HELPFUL!!

  3. ptllogic says:


    It worked for me as well!!! – thanks!


  4. Tom Molskow says:

    Excellent – great post – worked perfectly!

  5. Quintin Saaiman says:

    Had this problem after upgrading to Office 2010.

    - Go to “Programs and features”
    - Right click Office, select “Change”
    - Run the repair

    This resolved it for me.

  6. rhgeorge says:

    Thanks so much for the solution to my problem. Our IT Department has been unable to resolve, so I did my own investigation and found your solution. Thanks again!

  7. Andy Verma says:

    Thanks so much for the solution to my problem. You can also use word 97, as the machine I was working was a server and it did have not have outlook. This is also worked for me.

  8. Lee Sandford says:

    Yep, this worked for me as well. I was troubleshooting in all the wrong places… uninstall/reinstall, profiles etc….but this worked perfectly:)

    Will pass it onto my team for future reference.


  9. barbara gold says:

    where’s programs and features? can’t find in outlook 2010…thanks!

  10. Mark says:

    FIXED with the office repair :) Thanks for the solution.

  11. sree says:

    thanks a lot
    outlook diagnostic worked for me.

  12. Alan C says:

    Thank you, this fixed two problems! The library error, and another issue where my icons for Office 2003 files were showing generic windows icon instead of application specific icons (excel .xls file for example). 3 attempts by my IT team failed to fix this previous to me implementing your solution!

  13. poppy says:

    Thank you so much. Works for me too. Very grateful.

  14. Alain L says:

    Merci beaucoup pour cette solution, ca fonctionne très bien !

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