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I receive an error when opening an attachment in Microsoft Outlook. How do I clean out my temporary Outlook file folder?

When opening an attachment directly from within Microsoft Outlook, you may receive an error message saying that the file cannot be created and to you need check the permissions on the folder where you're trying to save. In most cases, the permissions on the folder are not the issue, but the fact that the folder is full. When you open an attachment directly from within Outlook, it will first save a copy to a sub-folder of your Temporary Internet Files folder. Cleaning out this folder will solve the issue.

Unfortunately, this is easier said than done. The sub-folder name Outlook creates (on installation of Outlook) in your Temporary Internet Files folder may be quite random. In Outlook 2003 and previous versions, the name starts with OLK and is followed by up to 4 random numbers or letters. In Outlook 2007 and Outlook 2010, this folder is called Content. Outlook and then has a sub-folder which is named with 8 random numbers and letters. In addition, by default, you cannot simply browse to the folder to clean it out. However, locating your Temporary Outlook Folder can still be accomplished in 2 easy steps:
Step 1: Locate the folder

The folder location is stored in the registry in the following key;

Outlook 97 HKEY_CURRENT_USER\Software\Microsoft\Office\8.0\Outlook\Security

Outlook 98 HKEY_CURRENT_USER\Software\Microsoft\Office\8.5\Outlook\Security

Outlook 2000 HKEY_CURRENT_USER\Software\Microsoft\Office\9.0\Outlook\Security

Outlook 2002/XP HKEY_CURRENT_USER\Software\Microsoft\Office\10.0\Outlook \Security

Outlook 2003 HKEY_CURRENT_USER\Software\Microsoft\Office\11.0\Outlook \Security

Outlook 2007 HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Outlook\Security

Outlook 2010 HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Outlook\Security

Step 2: Access to the folder

  1. Open the OutlookSecureTempFolder registry key from the location provided in Step 1.
  2. Copy the path from the key.
  3. Open Internet Explorer.
  4. Paste the address in the Address Bar and press Enter.
  5. Delete all of your temporary files.

If you have any questions directly ask an Amazing Service Team member here or email us at

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