How can I stop my environment changes being saved when I logoff?

Start the registry editor (regedit.exe)

Move toHKEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionPoliciesExplorer

From the Edit menu select "New - DWORD value". Enter a name of"NoSaveSettings"

Double click the new value and set to 1

Start the policy editor (poledit.exe)

Open your domains policy (or create a new one)

Double click Default User

Expand Shell - Restrictions

Check the 'Don't save settings at exit'

Click OK

Save the policy to the netlogon share of the domain controllers.