Adding tenants to O365

[MiSum83]

Hello team,

I'm trying to add a client's tennat to our company tenant in O365 and no luck. I've found info about how it should work, but I'm struggling to get it worked here....

Scenario:

I'm taking care of few client's with their own tenants, and would like to add them to our company's o365 one. I can see the "All tenant" option and also can click on switching the tenant, but can't see any additional in the list when trying that.

What I've done:

• in client's AZ AD, I've invited myself as a guest user with a Role: Global Administraotr. (I have an admin access to the client's tenant so I could do it by myself)
• I've accepted that invitation
• when I check our tennant, the client is not visible there... the list is empty (All tenants, or when trying to switch tenant)

I'm not sure if I'm missing something. Already had a look at ms docs. 

FYI - both tenants are using Azure AD for Office 365. Not sure whether upgrade to Premium is required in order to use B2B.

Or maybe I just don't understand the purpose of that properly? 🙂

[#2]

I believe you’ll need to set up a partner relationship between tenants. Just inviting a global admin likely won’t work in this case and you should be what Microsoft calls a ‘Partner delegated admin’.

[#3]

thanks.... I was expecting there may be some other steps that needs to be completed before.... just was not able to find what are they...

Will do some research on "Partner delegated admin"...

[#4]

Hi @MiSun83,

Delegated administration, that which you’re looking for, will work only for Microsoft partners and resellers. Else, the only options are managing manually- you could look at creating a browser shortcut which is signed in to client’s tenant.

If you’re a partner/reseller and are successfully able to add the client tenant, then you’ll be able to use the switch tenant option.

[#5]

If you want to add cx domain that is already added in another tenant, is not possible. You have to remove this domain from old tenant then you have to add to your new tenant.