Running Acrobat Reader on Azure Virtual Desktop and the free trial offer keeps appearing

We are running Acrobat Reader on Azure Virtual desktop using Remote Apps.  As one of the systems running on AVD produces PDF files which are then opened in Adobe Reader so the user can print or save the file as needed. For some users who have Acrobat Pro licenses (installed on their machines not on AVD) they are now getting the free trial offer pop up when Acrobat Reader is launched. They are then stuck in a loop as if they quit the free trial offer , Reader shuts down and therefore the PDF file is not produced, if they try and accept the free trial it wnat them to download Creative Cloud, which they have no permissions to do on AVD (ior their desktop). Basically this is preventing us using Adobe Reader. The only thought i have so far is to prevent Adobe Reader accessing the internet which might prevent it from offering the free trial. Any help would be appreciated.