Microsoft teams sign-in-error on Iphone

Question

I have a user who is unable to log into Teams app and will get 2 different error messages  "sign-in-error please try again" and "sign-in-error: you need to be invited to teams as a guest to use the app with a Microsoft account."  

I have tried to tried restarting the Iphone,

reinstalling the teams app,

updating IOS of the iphone to the latest,

I have tested using a different account, and when trying to use my account I continue to get the same error message.

I have reset the app in the settings on the iPhone- no change

on WiFi and off of WiFi on LTE- no change,

When trying to log into teams on web no issue.

Answer 1

Hello, 

I was able to fix the issue without a factory reset as the issue isn't with the phone but the teams app, this is how I fixed the issue.

I had to sign in with my email on the phone, when it asked for my password I hit "sign in with a different account" and then I used the user's email that was having problems and it asked for work or personal account.... this time I selected work and then let the user put in their password and that worked.

This is clear it's a bug with the teams app, it looks for a Microsoft account while we only have office 365 account for work. This would be very easy fix if when signing into teams with an email to simply ask every time if its a Microsoft or an office 365 account, just like when I sign into the Microsoft community, it will ask to sign in with a Microsoft account or an Office 365 account.... 

teams needs better support/updates

Answer 2

Thank you for the reply, here is the info you requested.

1. (yes I am able to log into teams on my phone and the desktop app)

2. (yes the user is able to sign onto teams on my phone, and was prompted for password)

If you need anything else please let me know asap, you can also PM me as I don't get any type of notification when you reply on here (even when I do check the "notify me when someone responds to this post")

Answer 3

Hi Dbrcpenn,

Thanks for your update. 

Let's go on troubleshooting this case as the followings: As you tested both the affected user's account and your account and both of them can't be signed into Teams app in that iPhone. Given the situation, I'd like to confirm the following information:

1. Whether your account can sign into Teams on your phone or device.
2. Whether that affected user can sign into Teams app on another phone (for example, your phone or any other colleague's). 

Meanwhile, I'd like to collect that affected user account in the Private Message (PM) for checking.

Regards,

Alan

Answer 4

Thank you for the reply,

I have checked the quarantine and there are no devices that have been Quarantined, 

The test account you sent me worked, so the phone is working correctly but still having issues with our account. 

1. (the user does use a office 365 account to log into teams, and is a member.)
2. (the user has never been able to log into teams on this iphone )
3. (No, once the user places the the email address in the field the user gets that error message, but when I tried my account I get the error message after I tried to sign in and put my password in)

There is an update on this issue, the user is now getting the error message ( No Account Found: Looks like you're not using Teams yet. Have someone Invite you to use the app, or set up Teams for your org) 

User is still able to log into teams using the desktop, if you need any other information from me please let me know.

Answer 5

Hi Dbrcpenn,

As your tenant accounts could not sign-in Teams from this iPhone, please go to Exchange admin center> mobile> mobiledevice access, check if the device has been quarantined. 

Also, please check if the issue persists to my test account. I have sent the account via private message. 

Meanwhile, please provide some details to troubleshoot:

1. Does the user use the Office 365 account log into Team in iPhone and is he a member or guest of Teams?
2. Could the user log into Teams in iPhone before? 
3. When did you get the error message, after fill in the password? Did you get the login page for the Office 365 account? 

Regards,

Hans