SESKStuff Everyone Should Know
SESK: Stuff Everyone Should Know · sesk.info/sec-guest-access-removal

If admins turn off external sharing, guests typically lose access within how long?

About one hour.

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  1. One week
  2. 30 days
  3. Within one hour ✔

Why: Microsoft says guests typically lose access within one hour of the change. Turning off sharing is a fast way to cut access, but remember to also remove old guest accounts.

Huh, didn't know that: Microsoft says the OneDrive setting can be more restrictive than the SharePoint setting, but not more permissive.

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References

Answer: Within one hour. Microsoft says guests typically lose access within one hour of the change. Turning off sharing is a fast way to cut access, but remember to also remove old guest accounts.

  1. Microsoft Learn: Turn external sharing on or off learn.microsoft.com/en-us/sharepoint/turn-external-sharing-on-or-off
    If you restrict or turn off external sharing, guests typically lose access within one hour of the change.
    Checked 2026-10-10.

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Security & PrivacySomeone calls saying they are Microsoft Support and your PC has a virus. What does Microsoft advise?Security & PrivacyWith number matching in Microsoft Authenticator, how do you approve a sign-in?Security & PrivacyWho can open a SharePoint or OneDrive 'Anyone' link?

That's stuff everyone should know.