Summary

B2B guest users invited to multiple customer tenants can’t switch tenants in Power Platform web experiences, especially Copilot Studio, which blocks partner delivery scenarios. This appears to be a product limitation, not a configuration issue.

Current behavior

• Copilot Studio (web) has no in‑app tenant/directory switcher for B2B guest users; guidance indicates cross‑tenant guest usage isn’t supported in that web experience today.
• Similar “no tenant switch” experience is seen for Power Platform Admin Center in guest scenarios.
• Microsoft documentation highlights tenant switching in the Power Apps mobile app (including guest users), but not an equivalent for the web portals.
• Guest access on web often requires standalone browser sessions to pick the correct B2B identity—adding friction.

Impact

Partners/consultants managing multiple client tenants are blocked from delivering projects (reported as urgent/time‑critical).

Request:

Provide a unified Tenant/Directory Switcher in Power Platform web portals (copilotstudio.microsoft.com, make.powerapps.com, make.powerautomate.com, admin.powerplatform.microsoft.com) for B2B guest users, consistent with the “Switch directory” experience available in other Microsoft portals.