The administrator gave me a role in a Power Platform/Dynamics 365 environment, but I cannot see that environment in the environment selector from make.powerapps.com or the Power Platform Admin Center.

Lots of people lately

So if you cannot reach an environment after being granted access to it, I’ve discovered the following seemingly fool-proof method of making that environment available:

1. Have the admin go to make.powerapps.com, select the environment, and create and save any canvas app (even a totally blank one).
2. Have the admin share the app in step 1 with you.
3. Open the app from the share email you receive.
4. You should now see the environment from all maker and admin portals.