If you cannot launch Dynamo in Revit 2021 with NullReference IsOptedIn error

[Garbage_Collector]

@Michael_Kirschner2

Simpler Experimental Alternative
These are unconfirmed simpler solutions to try first.

1. Close all autodesk products/Dynamo.
2. Try opening a newer ADSK product and disable Analytics from the UI in that product.
3. Open Dynamo in a newer ADSK product like, Revit 2022 and disable Analytics there.
4. Try rebooting Revit 2021.

Hi all,

Just to let you know. This ‘simpler alternative’ works for my affected users.

Just to add one step to the solution, not sure if its needed but i did it before hand…:

1. Close all autodesk products/Dynamo.
2. Delete all packages/settings e.t.c. for Dynamo 2.6
3. Try opening a newer ADSK product and disable Analytics from the UI in that product.
4. Open Dynamo in a newer ADSK product like, Revit 2022 and disable Analytics there.
5. Try rebooting Revit 2021.

I launched Revit 2022, disabled Autodesk Analytics there, launched Dynamo for Revit 2022 and disabled analytics.
Launched Dynamo in Revit 2021 and got a prompt if i wanted to enable analytics, which i didnt.
Users here can now use Dynamo again.

Thank you Dynamo/Autodesk team for piling up on this issue together!

(cc @jacob.small )