Jon Aquino's Mental Garden

Engineering beautiful software jon aquino labs | personal blog

Tuesday, November 30, 2004

Microsoft Outlook
An extension failed to initialize. Can't open file: extend.dat. The file may not exist, you may not have permission to open it, or it may be open in another program. Right-click the folder that contains the file, and then click Properties to check your permissions for the folder.


  • If you have a Registry cleaner or spyware cleaner try restoring deleted files performed in those programs closest to when the problem begun.

    By Anonymous Anonymous, at 12/06/2005 12:18 p.m.  

  • Most probably the file is hidden. The file should be in {drive}\Documents and settings\{your name}\local settings\application data\microsoft\outlook
    Unhide local settings and all suddirectories.

    By Anonymous Anonymous, at 12/06/2005 12:31 p.m.  

  • Thanks for the tips! Hopefully they will be of use to others.

    By Blogger Jonathan, at 12/06/2005 10:55 p.m.  

  • Just would like to say the tip about the file being hidden was most useful for me and my outlook now opens without problems.

    By Anonymous Anonymous, at 12/15/2005 2:59 a.m.  

  • Sweet!

    By Blogger Jonathan, at 12/16/2005 11:44 p.m.  

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