Normally for installing apps on TS or Citrix everyone would always put system in Change user/install mode and do so when all users logged off system. Is this recommended for unregistering a dll as well? My guess would be this is not critical?? However can this be safely/effectively done while many users logged onto system ************************************************ For Archives, RSS, to Unsubscribe, Subscribe or set Digest or Vacation mode use the below link: //www.freelists.org/list/thin ************************************************