{"SessionId":"a0237fb6-ca3a-824d-a06f-3aa9deb6f669","Timestamp":1775664888511,"Error":"INTERACTIONREQUIRED"}

Question

I GOT THIS MESSAGE CANNOT ENTER MAILBOX

{"SessionId":"a0237fb6-ca3a-824d-a06f-3aa9deb6f669","Timestamp":1775664888511,"Error":"INTERACTIONREQUIRED"}

Answer 1

Hi Minnoye-Remans Marc-Iris

I understand how frustrating it is when you suddenly can’t access your mailbox, especially when Outlook just shows a technical error.

Have you already tried the Q&A Assist suggestions? In addition, please try the following steps:

1, Sign in through the web first

• Go to https://outlook.live.com
• Sign in with the same email address
• Complete all prompts (security verification, consent, password confirmation, etc.)

If you can access your mailbox in the browser, continue to Step 2:

2, Remove and re‑add the account in Classic Outlook

• Open Outlook
• Go to “File” > “Account Settings” > “Account Settings…”
• Remove the affected account
• Restart Outlook
• Add the account again and sign in when prompted

Please feel free to let me know how it goes. Thank you for your time and understanding.

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Answer 2

The "Error":"INTERACTIONREQUIRED" value indicates that an interactive sign-in or consent step is required by the identity provider before access to the mailbox can continue. This is a server-originated condition that cannot be completed silently and typically appears when additional authentication, consent, or policy acknowledgment is needed.

To proceed, perform an interactive sign-in with the affected account:

1. Sign out of the account in Outlook and any associated Microsoft apps.
2. Start Outlook and sign in again with the mailbox credentials, completing all prompts (MFA, consent screens, or policy prompts) until Outlook finishes connecting.
3. If the prompts do not appear or the mailbox still cannot be opened, contact the mail or tenant administrator so they can verify the account and mailbox status and any conditional access or security policies that may be blocking non-interactive access.

The error code itself corresponds to the interaction_required condition defined by the authentication library and means the request must be completed with user interaction.

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References:

• InteractionRequiredAuthErrorCodes module