Cannot Save Outlook Attachments when C:\ drive is Hidden

We have Outlook 2010, running on Windows 7 (both 64 bit). Our users were complaining that after opening an attachment in outlook, and going to save it, it came up with an error. Which was:

‘This operation has been cancelled due to restrictions in effect on this computer. Please contact your system administrator.’

To replicate the issue:

  1. Log on as a user who cannot see the C:\ drive in My Computer
  2. Send the user an email with a Word/Excel attachment
  3. Open the attachment
  4. Go to File –> Save As

The error will then appear.

A workaround to this, which stops the error appearing is to change a registry key. The key below sets where Outlook puts temporary attachments that you open.


In our case we changed the value of this setting to a folder within their My Documents called Microsoft Outlook Temporary Attachments (so the path became U:\My Documents\Microsoft Outlook Temporary Attachments). Restart Outlook and repeat the above steps and the error should disappear.

Not yet created a script or GPO to do this, but if I do then I will post an update.

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