Tenant Access Blocked error

Question

I am receiving the following error when trying to access my Outlook account:

UTC Date: 2026-04-06T13:15:37.100Z
Client Id: 99F948742DD44E03A9401CBA9ABA6CCC
Session Id: 8e5b9fe0-4a96-4ca7-8b30-96bd3e73b7a7
Client Version: 20260320002.12
BootResult: configuration
Back Filled Errors: Unhandled Rejection: Error: 500:undefined|undefined:undefined
err: Microsoft.Exchange.Data.Storage.TenantAccessBlockedException
esrc: StartupData
et: ServerError
estack: Error: 500
    at Object.y [as createStatusErrorMessage] (https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.ad50be7b.js:2:299099)
    at https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.ad50be7b.js:2:23784
st: 500
ehk: X-OWA-Error
efe: BL1PR13CA0395
ewsver: 15.20.9769.20
emsg: TenantAccessBlockedError

Any ideas on how to fix this?

Answer 1

Hello,

That TenantAccessBlocked error usually means Microsoft suspended or locked down the organization environment that your email is attached to. This usually happens for work or school accounts when a subscription expires, a payment fails, or some security policy gets tripped.

Are you logging in with an email given to you by your workplace or university, or is this a personal account? Let me know if you are a regular user or the IT administrator who set up the domain, so we can figure out what to do next.