Garmin Express version 7.19.0.0
Windows 10 on laptop
No problem from 2019 until this year.
Sync still downloads data from the vivosmart 4 to computer. But it no longer changes time on vivosmart 4 to match time on computer. vivosmart 4 is losing minutes per day, At the moment it nearly 2 hours behind the correct time.
No manual update of time possible.