How to Outlook

Aug 17, 2011

Cannot Start Microsoft Outlook : Fix Error Message

You double-click the Microsoft Outlook icon, and after few seconds, there it is an annoying error message “Cannot start Microsoft Outlook”. Microsoft Outlook requires Microsoft Outlook Express 4.01 or greater. You can install Outlook Express by running Add/Remove Programs from the Control Panel. You could try searching Microsoft's knowledge-base, only to find the solutions apply to Windows 2000. And Outlook Express is installed and running just fine, and you're running Windows XP!

Note:- Before following the steps below, I do not recommend you doing this unless you are comfortable editing the Windows Settings. I will not responsible for any damage that may be caused to your PC after editing the settings by following the steps below. You proceed at your own risk or may take help from Microsoft Certified Technician at their Toll Free No. +1-877-452-9201

Steps to Resolve Cannot Start Microsoft Outlook Issue:-
  • Click Start>Run>type regedit and hit Enter. Navigate to the following registry key: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components\{44BBAB40-CC51-11CF-AAFA-00AA00B6015C}.
  • Highlight the registry key and then locate the REG_DWORD values IsInstalled under Microsoft Outlook Express 6 and MailNews. If either of the values are set to 0, change them to 1. To do this, right click on the REG_DWORD values and select Modify. In the Value Data form field, enter 1 and click OK. Close out regedit and start Outlook.
  • But wait! I have the registry key {44BBAB40-CC51-11CF-AAFA-00AA00B6015C} but it's in a folder called Autoruns Disabled listed at the bottom of Installed Components. Good; this step applies to you then. Download and install the program Autoruns listed in the resources section (or if you ran Autoruns, run it again).
  • Locate the file Autoruns.zip. Right-click the file and then click "Extract All..." and save the file in the default location. Click the "Extract" button. The Autoruns folder opens. Double-click Autoruns.exe. Click "Run." Now, locate the registry key mentioned in Step 1. Place a check next to each entry of Outlook. Close out of Autoruns and double-click on your Outlook icon to start Outlook.
See also: How to Fix Microsoft Outlook Can't Create File Error


    froz December 2, 2011 at 4:46 AM

    When a Cannot Start Outlook error message appears, try running Microsoft Office Diagnosis, which would tell whether there are any errors in actuality..

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