I installed Azure AD Connect and synced to my premise AD server. I see additional tenants listed in Azure that I don't own. Why are the appearing and should I just remove them?
Unexpected tenants showing up in AAD after Azure AD connect
It is likely possible that your email had access to their tenants (maybe you worked with them or you created b2b tenants created in your AAD). You can select the tenant of which you don't want to be part of it then click on the "leave tenant" to leave. If for some reason problem persists or not able to leave then you may need to contact support.
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