This morning I did 3 separate rides on Zwift and when I went to check Strava afterwards none of them uploaded. I had no internet issues at the time and I was able to upload them manually. I checked my Zwift connections and there it was….Strava wasn’t connected. This is the first time I’ve had this issue and as a coincidence there was a Zwift update this morning. 
I had a look at your account, and it shows that Zwift was disconnected from Strava at 3:03 PM PST on March 18, 2022, which occurred shortly before you started the ToW Stage 3: The Queen Event.
I see that Zwift was re-connected to Strava at 4:40 PM PST on that same day.
So from what I can see, it looks like there was about a 1 hour and 37 minute period of time where Strava and Zwift were not connected, hence the activity upload failures. From what I can see, Garmin was uploading without issue.
Hi Steven
Thanks for looking into that for me. That coincides with me logging on and the update taking place then me riding, finishing, finding out the rides didn’t upload and me figuring out that Zwift was no longer connected to Stava and reconnecting.
So it seems to me that the update was issue here because I certainly didn’t log in and change anything prior to the problem. My ride uploaded fine today so all is well again it seems.
Cheers Mal
You’re welcome and I’m happy to share what I found!
It’s hard to say what caused the short term disconnect from Strava, but I’m not aware of anything on the Zwift side that would arbitrarily disconnect (or reconnect) Strava from Zwift.
If I had to guess, since there were no issues with your Garmin uploads, it could have been a temporary issue on the Strava side.
Either way, I’m glad to hear that your most recent activity was uploaded without issue.
Ride On.