We've been running TB in our environment on terminal servers for the last 6-7 years. We have Group Policies configured to pre-configure several default settings (mail storage path, global calendars, mail server info (domain, type, ports etc) when the user first opens Thunderbird new. This has been working fine upto version 140. It no longer functions. We updated the ADMX/ADML files for the current release, with no change. When we go into look at the Group Policy settings, those options are o longer available. It's been suggested that setting up a Policies.json file is what we need to do now, but those settings do not appear to be available. Is there any was to do what we were doing with the current version of TB, via Policies, or Group Policy that I'm missing? Thanks in advance! Tim