Forum Discussion
Modern external network migration, how to sign into new tenant with admin account.
- Sep 04, 2025
Ok, so it turns out the Viva engage implementation of the parent tenant is in a different geographical location to the one I chose when creating the new tenant.
The confusing thing is that if I go to "365 Admin > Settings > Org Settings > Organization Profile > Data location" it tells me all my services are located the UK, yet Microsoft themselves (there is no way for a customer to check) have checked an tell me my Viva data is homed in the US. I can migrate Viva to the UK but all my Viva data and communities are lost and I have to start from scratch. To me this is a massive oversight especially with GDPR etc. and UK public organisation needing to keep data within the EU.
Also the best way I found to sign into the new tenant was to make sure the global admin that gets created in the new tenant is added as a 'member' rather than guest, reset their password.
Go to engage.cloud.microsoft and sign in with first.last_homedomain_#email address removed for privacy reasons using the password you set above.
Dont forget before this you'll need to add an E5 license to the new tenant and assign it to the above account. I found it easiest to create a new global admin to add an E5 trial license to carry this out.
Another observation is that the token code that gets generated doesn't change no matter who generates it, it seems to be unique to the new tenant rather than the user that generates it so needing to use the initially added account in the new tenant I think is incorrect.
This just seems like a mess to be frank, I'm now into the licensing battle of needing to know if someone from another tenant with an E3 license that is added to the new tenant as a guest needs a licenses in that tenant as well to access Viva.