How do I "add an account on mobile to use this app" in the Outlook app on my Google pixel 2 watch?

Thanks for the reply. This community is awesome, you really helped me solve this problem. Thanks to everyone!

This also worked for me, Pixel 9 Pro XL & Pixel Watch 3 45mm.

I had both a Microsoft 365 for Work account and a Gmail setup on my phone, I removed only the 365 account then followed the steps with the extra precaution of rebooting both the phone and watch before re adding the 365 account on my phone. Once done both the 365 and Google accounts are accessible from my phone AND watch.

If a representative from Microsoft sees this thread hopefully there will be a more streamlined way to do this in future.

I don't believe we should have to remove the account and data on our phone given it's already there just to connect a watch.

Out of interest did you have to remove all accounts from Outlook on your phone or just the one you want on your watch?

Adam Skov I only have one account in my Outlook phone app which is a personal account. I only removed it from the app and did not touch any phone settings. In following the exact steps that were posted by Pavel Chernitsky and reiterated below, it worked right away.

1. Remove the account on the phone app. hit the home icon - top-left -> settings cog -> accounts -> pick the account you want to fix -> click the giant red "remove account" text (it doesn't appear to be irreversible, you can, and you will, re-activate it later with two clicks)
2. Force stop the watch app.
3. Clear cache on watch app
4. Clear data on watch app.
5. Re-activate your account on the phone app. (the account that was "removed" will show as an option to be added)
6. Launch the watch app.
   https://learn-attachment.microsoft.com/api/attachments/a4b692a6-196e-421f-b0cf-6e91b5a93f55?platform=QnA&fud_access=hC1SxZhn7m%2FZQJkOIiOVstu10yTQgXS4A%2FDBzZTg8nbaCgIogkrcDydMeI5Y4za2dOqDdWtsG2JNS3E35V60i9TiGHR7STMpJHheeXuDvO8nwjUlqCBHhJ0NDvuYN7OSq2hah6oT48NH6%2F76zdwVnMdyh%2FjM%2BRwKsg70roIxOXQ91qg7ccmmWWYtOTnFavPTPZVtPLBVygAbYB%2BjTBLSMM7M%2B6Hx4%2Bf6enIuoSUH2a8y%2BGxP%2FM9rrmlNkdvUsyB9ODQNvhzJ9pIRN5wWpc72vnuBYJhrXjsU%2F6SJVfolIJcce0DRqsYltKwpMHekWwRlI%2FCAY4ng1CJGi77CcmUB3Sx2ABcRXofoafRdB9VAZIiWEUcQDUo%2FPIyI66joZMDsrqh56HUCH8tFtd1uf1s%2BUy3LEf%2B2WYMTidadkBNXYm8%3D
   Here is a screen shot to show that it's working. This is a Pixel Watch 3 45mm with a case on it. The phone this is linked to is a Pixel 9 Pro XL.

Out of interest did you have to remove all accounts from Outlook on your phone or just the one you want on your watch?