I'm running a single W2K TS server w/Citrix 1.8 FR2 and have a problem changing file associations. A systems admin at my company recently installed an application on the server that associated itself to gif, tif, tiff and jpg file extensions. I can successfully enable the "File Types" option in Explorer, as administrator, and change the extensions use Microsoft Image Preview application. Unfortunately, the change only applies to file associations in the profile the change was made in (including local admin and domain admin). I thought that modifying the HKLM setting and changing the file association as per MS article 257592 would work globally? Do I need to use FTYPE and ASSOC to manually change the file types? I realize this topic is covered extensively in the archives but have yet to find anything to remedy the situation. Thanks,