When you try to open or save an e-mail attachment, you may receive the following error message:
Cannot create file: file name. Right-click the folder you want to create the file in and click Properties on the shortcut menu to check your permissions for the folder.
This issue may occur when the Temporary Internet Files folder is stored on a server on which you do not have sufficient permissions.
Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
322756 How to back up and restore the registry in Windows
In the right pane, double-click OutlookSecureTempFolder.
In the Value Data field, type C:\temp0\ and then click OK.
Exit Registry Editor.
Restart the computer.
Did this fix the problem?
Check whether the problem is fixed. If the problem is fixed, you are finished with this section. If the problem is not fixed, you can contact support.
Microsoft Outlook 2000 Service Release 1 has a security enhancement that saves the attachment as a temporary file. The file is saved in the Temporary Internet Files folder in a folder that has a random name. When roaming profiles are set up, the Temporary Internet Files folder is stored in the user's profile on a server. The user gains access to the folder over the network.