To disable the auto updater feature for Foxit Reader version 7.0, inside of Group Policy Editor for your RDS Server’s User Policy, navigate here and do the following:
User Configuration > Preferences > Windows Settings > Registry Right-click Registry > New > Registry-Item Action: Update Hive: HKEY_CURRENT_USER Key Path: Software\Foxit Software\Foxit Reader 7.0\plugins\Updater Value name: UpdateMode Value type: REG_SZ Value data: 0