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AndyPalmerCTC's avatar
AndyPalmerCTC
Copper Contributor
Jan 07, 2020

O365 MFA not sending text to mobile phone

Hi Tech friends,
 
Our company has several O365 Tenants which we manage and we have recently been updating them to ensure our verification details are correct.
In many instances this sees us go to the MFA setup page in order to add our two Mobile phone numbers and Mobile Verification App as options on the Tenant admin accounts.
 
Today this isn't working (Tues 7th Jan 2020 @ 12:30 UTC).
 
When I select the Mobile phone and enter the number (using the United Kingdom dial code) on Step 1 this appears to be accepted and then goes to the Step 2 page. At this point I get the usual circle of dots and then the page does NOT show a box to put the code into as I'd usually expect...
Instead it says:
Step 2: We've sent a text message to your phone on +44 07xxxxxxx
Please check the phone number that you specified or change your preferred option.
Correlation ID: 1f4c2119-7ed9-48b1-aa2c-46df78a3bdxx
Session ID: 300301ef-a9eb-4683-bb3b-fb3c11bccdxx
Timestamp:
Then a Retry and a Cancel button.
No text is received on our phone.
 
This is true of the two different Tenants we manage that I have tried today.
I have checked the phone receives Texts perfectly (at least from another UK mobile phone).
 
Does Microsoft have an issue with this service currently?
Any advice greatly received.
 
Thanks
Andy
  • Mysteriously this morning it is now all working again as before (as of 9am UK time).

    I can only suggest a MS glitch yesterday which is now resolved.

    Thanks for all and any assistance from those on this thread and any others who noticed and were in a position to get it fixed. 🙂

    Kindest,

     

  • Salop's avatar
    Salop
    Copper Contributor

    AndyPalmerCTC - without stating the obvious, +44 as the UK dial code replaces the 0 in 07 - looks like there could be too many characters for it to read it as a number as in theory its reading +4407.... 

    Just a thought, but let me know how you get on.

    • AndyPalmerCTC's avatar
      AndyPalmerCTC
      Copper Contributor

      Salop 

      Thanks.

      Yes I agree however this is what I've been using for some time now, the system seems to accept the first 0 stripping it if required.

      Incidentally I have tried today with and without the initial 0 and the effect is the same so I don't believe this is the issue.

       

  • AndyPalmerCTC's avatar
    AndyPalmerCTC
    Copper Contributor

    As an update to this...

    I was able to access one of our Tenants and setup the Password Recovery option email for a standard account. However, when doing this for the logged in Admin account this required both email and phone options to be configured (rightly) - The email option works fine, the phone option neither texts or rings the phone number I put in (tried three numbers including a land-line).

    Incidentally we have received a text from Microsoft for an authentication code. This was received some 2 hours after I last tried to do this and we only got one code (having tried at least 4 times).

    I'm suspecting MS have an issue with automated text / calls in the UK...
    Anyone know who I should contact to get someone to look into this?

  • AndyPalmerCTC's avatar
    AndyPalmerCTC
    Copper Contributor

    Mysteriously this morning it is now all working again as before (as of 9am UK time).

    I can only suggest a MS glitch yesterday which is now resolved.

    Thanks for all and any assistance from those on this thread and any others who noticed and were in a position to get it fixed. 🙂

    Kindest,

     

  • AndyPalmerCTC the same issue here again - Feb 5th 2020:

    Users enrolled for Multi Factor Authentication (MFA) and used it last night to access Office 365 from a personal computer and received the text on +1 XXX SSS RREE and it worked successfully.

     

    Today they are attempting to access the Office 365 portal this afternoon on the same computer but not receiving the MFA code on the mobile phone, tried twice and still no text.

     

      • Ali Fadavinia's avatar
        Ali Fadavinia
        Iron Contributor

        AndyPalmerCTC Thanks for the update,

         

        Here, it was out for few hours and then all delayed messages came through on all messages.

         

        I remember similar thing happened last year also, but Microsoft did not announce anything in the Health view dashboard in the admin portal.

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