Hi all, I'm trying to upgrade an umbraco site from 11.5 to 12.0 but I'm getting the following error: The database failed to upgrade. ERROR: The database configuration failed with the following message: The migration plan does not support migrating from state "{2CA0C5BB-170B-45E5-8179-E73DA4B41A46}". This error occurred going from 10.7 to 11.0, but was resolved upgrading to 11.5.0 instead but this approach doesn't work with v12.

I am struggling with this as well!

Are you absolutely sure you are running 12.0? Seems like that migration is still in (https://github.com/umbraco/Umbraco-CMS/blob/ca5dce571c1e92a46403063b6b29dfbd8b86ecb0/src/Umbraco.Infrastructure/Migrations/Upgrade/UmbracoPlan.cs#L85). Try clearing out your bin folder and do a rebuild.

Isn't it better to upgrade directly to 12.latest from 11.latest as 12.latest would support more migrations than 12.0? I've upgraded from 11.latest to 12.1 (IIRC); maybe this is caused by Umbraco Forms or something else that supports migrations?

The database has updated to 11.5, I can see that in the back office when I check the version. It doesn't seem to matter which version of 12 (I tried the latest first), it still seems to complain about the migration plan not supporting the state. I've also tried clearing out the bin and rebuilding, to no avail 😦

That sounds unrelated. Sure it's not Forms?

Yeah I think it was possibly an issue with misaligned versions with Forms and CMS. The timeout seems to happen while UpdatePropertyData is running in SQL