Both ends running Windows 10 Professional, and
TeamViewer 15.37.3 (64 bit)
Sometimes the connection is successful, other times hangs on "Initializing display parameters"
Time of day (traffic on the originating office LAN?) seems to make a difference, that is during office hours connection failure is likely, outside office hours connection may succeed.
When an attempted connection hangs, switching the local computer from the office LAN to my iPhone hotspot seems to always result in a successful connection.
Both computers are powered down at the end of the day (Windows Shutdown) and rebooted at the beginning of the day.
My suspicion is packets are getting lost somewhere in the office LAN side of things.
Searching here for "Initializing display parameters" generated a fairly short list of hits, none of which suggested something that has not already been tried.
I'm looking for troubleshooting suggestions ... is it time to open a support ticket?