Vivoactive 4 crashes always when strating to track an activity

Hi Garmin.

I have the same issue here, it's frustrating, the watch it's totally useless now, pls contact my email for solution, mine is [email protected].
SW version also 7.81

Hi I have the same issue. Watch crashes when activity is started...

If have found a solution to this that worked for me....

Fully factory reset the watch (a pain I know), and then start over again as if a new watch, linking to phone etc. This will then install the latest update to the watch, effectively removing the older updates which seem to be causing the issue. Mine has been great ever since.

Thanks. I will try this in the morning. 

I fixed it only after I changed the battery