Tip 677: Error: Can’t create work file

We’re seeing more complaints that Outlook reports this error: “Outlook could not create the work file. Check the temp environment variable.” In many cases, this happens after an upgrade.

This error is the result of a corrupted temporary internet cache variable, possibly caused by the upgrading the OS or using Easy Transfer to move settings to a new computer.

Fixing it is fairly easy, but does require editing the registry.

At Start menu, Run (or Windows key + R) type
regedit

Browse to HKEY_CURRENT_USER\Software\Microsoft\Windows\Current Version\Explorer\User Shell Folders

The Cache variable (in the right pane) should be as follows:

Vista or Windows 7:
%USERPROFILE%\AppData\Local\Microsoft\Windows\Temporary Internet Files

Windows XP:
%USERPROFILE%\Local Settings\Temporary Internet Files

Double click on the Cache name to open it and edit.

Published November 10, 2009. Last updated on May 17, 2011.