Hi,I see a number of Risky Sign-ins with the code 50173 - Fresh auth token is needed. Have the user re-sign using fresh credentials. And the status is "Failure".But I noticed the IP address captured is of another country. How to interpret the error code?Thanks.

Hi cllee,Not sure why it shows from different country, but this message refers to token expiration and needs to be refreshed. There are some ways to extend the token lifetime like Conditional Access.Are you checking the logs from MCAS? If not, I would check from that side as the logs more organized.https://docs.microsoft.com/en-us/azure/active-directory/develop/active-directory-configurable-token-lifetimes

Moe_Kinani Is there a possibility where someone else has also setup the access to the user account from another country? Thanks.

Do you have MFA in place?If yes, It could be false alarm.Again I would check Microsoft Cloud App Security for more details about the incident.Moe

cllee If you get an alert from Identity Protection, you can never be 100% sure why it was flagged as risky as Microsoft keeps these methods confidential. I would suggest you check with the never if he has any clue why this login occurred ( he might be travelling, using roaming data or VPN). If he doesn't know anything about this login, I would advise you to change his password and expire all his tokens. Even if he has MFA, his account could still be breached.

Thijs Lecomte Thanks for your advice. I have reset the password.If the status of the code shows "Failure", is that also indicating that the user account has been compromise? Or someone did successfully gain access to the account prior to this?Or it could be just an attempt? Thanks.

Code - 50173 | Microsoft Community Hub

11 Replies

Thijs Lecomte
Bronze Contributor
Apr 13, 2020
cllee

If you get an alert from Identity Protection, you can never be 100% sure why it was flagged as risky as Microsoft keeps these methods confidential.

I would suggest you check with the never if he has any clue why this login occurred ( he might be travelling, using roaming data or VPN).

If he doesn't know anything about this login, I would advise you to change his password and expire all his tokens. Even if he has MFA, his account could still be breached.
- cllee
  Brass Contributor
  Apr 13, 2020
  Thijs Lecomte
  
  Thanks for your advice. I have reset the password.
  If the status of the code shows "Failure", is that also indicating that the user account has been compromise? Or someone did successfully gain access to the account prior to this?
  
  Or it could be just an attempt? Thanks.
  - Thijs Lecomte
    Bronze Contributor
    Apr 14, 2020
    cllee
    You need to review the sign-in and check what the failure reason is.
    
    If it failed because of a bad PW, no harm done
    
    If it failed because of MFA, this is a breach as the password has been breached.
Moe_Kinani
Bronze Contributor
Apr 12, 2020
Hi cllee,

Not sure why it shows from different country, but this message refers to token expiration and needs to be refreshed. There are some ways to extend the token lifetime like Conditional Access.

Are you checking the logs from MCAS? If not, I would check from that side as the logs more organized.

https://docs.microsoft.com/en-us/azure/active-directory/develop/active-directory-configurable-token-lifetimes
- cllee
  Brass Contributor
  Apr 12, 2020
  Moe_Kinani
  
  Is there a possibility where someone else has also setup the access to the user account from another country?
  
  Thanks.
  - Moe_Kinani
    Bronze Contributor
    Apr 12, 2020
    Do you have MFA in place?If yes, It could be false alarm.
    
    Again I would check Microsoft Cloud App Security for more details about the incident.
    
    Moe

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Code - 50173

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