Our users keep getting Can not connect to the citrix due to proxy detection failure when attempting to connect to applications. Having looked on citrix forum it states you need use a URL for your .pac file. We already do this and the pac file is correct because it is used by the whole business for internet. If it didn't work, they wouldn't be able to access the internet at all. does anybody have any ideas as to what else it could be? We have tried different versions of the ICA Client, 9.0, 9.2, 9.3 all to no avail. Thanks in advance