Outlook Error An Extension Failed To Initialize
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? Ask a question, help others, and get answers from the community Discussions Start a thread and discuss today's topics with top experts Blogs Read the latest tech blogs written by experienced community members Outlook 2007 extend.dat error Kaplowitzenterprises 5 pts. Tags: Thanks! We'll email youwhen relevant content isadded and updated. Following Follow extend.dat Thanks! We'll email youwhen relevant content isadded and updated. Following Follow Microsoft Outlook Thanks! We'll email youwhen relevant content isadded and updated. Following Follow Microsoft Outlook 2007 Thanks! We'll http://answers.microsoft.com/en-us/msoffice/forum/msoffice_outlook-mso_other/error-message-opening-outlook-an-extension-failed/74c5014a-9737-4457-84fb-8d5eb79c4ada email youwhen relevant content isadded and updated. Following Follow Outlook 2007 error messages How do I recover from the following Outlook 2007 error message? "An extension failed to initialize. Cannot 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 http://itknowledgeexchange.techtarget.com/itanswers/outlook-2007-extenddat-error/ contains the file, and then click Properties to check your permissions for the folder. You don't have appropriate permission to perform this operation". I am the administrator account for this personal laptop. I cannot find the extend..dat file anywhere on my hard drive. Asked: April 23, 20094:11 AM Last updated: September 9, 20145:34 AM Related Questions extend.dat error Missing extend.dat file in Outlook 2007 Outlook Does Not Complete Loading Terminal Services profiles for active directory domain Home Dir Security and file sync aka CSC Answer Wiki Last updated: April 18, 20138:14 PM GMT Michael Tidmarsh49,075 pts. History Contributors Ordered by most recent Michael Tidmarsh49,075 pts. carlosdl80,565 pts. Thanks. We'll let you know when a new response is added. Maybe you were not able to find the file because your computer is set to not show hidden files and folders. First allow hidden files and folders (from my computer, click tools and then folder options. Click the view tab. Scroll down to the option "Hidden files and folders". Click the "show hid
Videos An extension failed to initialize. Can't open file extend.dat Filed Under: Blogroll by Yaswanth — 10 Comments September 19, 2007 Today out of the blue, when loading office 2003 on an http://blog.yaswanth.org/2007/09/an-extension-failed-to-initialize-cant-open-file-extenddat-2/comment-page-1/ xp machine, an error message appeared with the text: "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. You don't have appropriate permissions to perform this operation." Being me an administrator failed to it seemed more complicated than a permission problem. What is the extend.dat file? It is a file used to cache extensions built for outlook. The problem with the file could be fixed by either deleting it or renaming it. If hidden files and folders are not visible you will have to set your explorer window to view those types of files. If you know how to show hidden files skip "Viewing an extension failed Hidden Files". Viewing Hidden Files: To view folders and files that are hidden, from my computer, click tools and then folder options. Click the view tab at the top of the window. Scroll down to the option Hidden files and folders. Click the option that says show hidden files and folders. Then click OK. The Fix: Make sure outlook is closed and not running. If you are viewing hidden files and folders, use windows explorer to go to documents and settings, then the folder of the user with the error. Next click Local Settings, then Application Data, then Microsoft, and finally click and go into the outlook folder. There is where you will find extend.dat. Now from here rename the file from extend.dat to extendOld. Restart outlook and send someone an email. Tip : To do this in my style just type the below line at your command prompt but make sure you close outlook first del "%userprofile%\local settings\application data\microsoft\outlook\extend.dat" Like this:Like Loading... « Secure your system :: Ctrl + c Place Windows Kernel into RAM - Registry Hacks to Speed Up XP » Permanent Link Comments RSS feed 10 Comments: Duke September 19th, 2007 at 7:56 pm Awesome, this worked fro Office 2007 using Vista as well! bob Janu