FAQ: Q25
Link: http://www.ilopia.com/FAQ/FAQ.aspx?id=25
Why is the box for Always use the selected program to open this kind of file grayed out? It is the same if I go to to Control Panel, double click Folder Options and click the File Types tab.
This is by design for Windows Server 2003 Terminal Servers (also for Windows
2000 Terminal Servers). The only way to change file assoiciations is by doing it
programmatically or by using MSI-based applications. The reason for this is to
ensure that unintentionally changes using the user interface affects the server
running as Terminal Server or one of its users. You can however change this
behavior by modify the registry. If you are not familiar with the registry,
please do not follow these steps! Incorrectly usage of the Registry
Editor may cause your computer to not boot up.
- Click Start->Run and type regedit
- Navigate to the key
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer
- Right click NoFileAssociate, select Modify and change the
value from 1 to 0