SOLVED

Teams default log in details

%3CLINGO-SUB%20id%3D%22lingo-sub-1488794%22%20slang%3D%22en-US%22%3ETeams%20default%20log%20in%20details%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-1488794%22%20slang%3D%22en-US%22%3E%3CP%3EIs%20there%20a%20way%20to%20change%20how%20Teams%20pulls%20it's%20log%20in%20information%3F%3C%2FP%3E%3CP%3EWe%20have%20a%20company%20domain%20-%20internal.companyA.co.uk%20but%20use%20a%20completely%20different%20suffix%20companyB.com%20for%20email%20via%20365.%3C%2FP%3E%3CP%3EWhen%20Teams%20loads%20and%20attempts%20to%20sign%20in%2C%20it%20is%20trying%20to%20use%20the%20internal%20domain%20account%20-%20%3CA%20href%3D%22mailto%3Auser%40internal.companyA.co.uk%22%20target%3D%22_blank%22%20rel%3D%22nofollow%20noopener%20noreferrer%20noopener%20noreferrer%20noopener%20noreferrer%22%3Euser%40internal.companyA.co.uk%3C%2FA%3E%20as%20default.%3C%2FP%3E%3CP%3EIs%20there%20a%20way%20to%20change%20this%20behaviour%20across%20all%20users%20so%20that%20Teams%20automatically%20pulls%20the%20new%20email%20address%20from%20Outlook%3F%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-LABS%20id%3D%22lingo-labs-1488794%22%20slang%3D%22en-US%22%3E%3CLINGO-LABEL%3EMicrosoft%20Teams%3C%2FLINGO-LABEL%3E%3C%2FLINGO-LABS%3E%3CLINGO-SUB%20id%3D%22lingo-sub-1494799%22%20slang%3D%22en-US%22%3ERe%3A%20Teams%20default%20log%20in%20details%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-1494799%22%20slang%3D%22en-US%22%3E%3CP%3E%3CA%20href%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fuser%2Fviewprofilepage%2Fuser-id%2F710057%22%20target%3D%22_blank%22%3E%40stewietm%3C%2FA%3E%26nbsp%3BHey%2C%20as%20far%20as%20I%20know%20Teams%20will%20always%20try%20and%20log%20into%20the%20domain-joined%20PC%20account.%26nbsp%3BBut%20you%20can%20use%20the%20following%20registry%20key%20to%20turn%20off%20pre-population%20of%20the%20UPN%20in%20the%20sign-in%20prompt.%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3E%3CSPAN%3EComputer%5CHKEY_CURRENT_USER%5CSoftware%5CMicrosoft%5COffice%5CTeams%3C%2FSPAN%3E%3CBR%20%2F%3E%3CSPAN%3ESkipUpnPrefill%20(REG_DWORD)%26nbsp%3B%3C%2FSPAN%3E%3CSPAN%3E0x00000001%20(1)%3C%2FSPAN%3E%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3EFor%20reference%20and%20guidance.%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3E'Teams%20will%20always%20log%20into%20the%20domain-joined%20PC%20account'%3C%2FP%3E%3CP%3E%3CA%20href%3D%22https%3A%2F%2Fdocs.microsoft.com%2Fen-us%2Fmicrosoftteams%2Ftroubleshoot%2Fknown-issues%2Fteams-defaults-to-domain-joined-account%22%20target%3D%22_blank%22%20rel%3D%22noopener%20noreferrer%20noopener%20noreferrer%22%3Ehttps%3A%2F%2Fdocs.microsoft.com%2Fen-us%2Fmicrosoftteams%2Ftroubleshoot%2Fknown-issues%2Fteams-defaults-to-domain-joined-account%3C%2FA%3E%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3E'Sign%20in%20to%20Microsoft%20Teams%20using%20modern%20authentication'%3C%2FP%3E%3CP%3E%3CA%20href%3D%22https%3A%2F%2Fdocs.microsoft.com%2Fen-us%2Fmicrosoftteams%2Fsign-in-teams%22%20target%3D%22_blank%22%20rel%3D%22noopener%20noreferrer%20noopener%20noreferrer%22%3Ehttps%3A%2F%2Fdocs.microsoft.com%2Fen-us%2Fmicrosoftteams%2Fsign-in-teams%3C%2FA%3E%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3C%2FLINGO-BODY%3E
Occasional Visitor

Is there a way to change how Teams pulls it's log in information?

We have a company domain - internal.companyA.co.uk but use a completely different suffix companyB.com for email via 365.

When Teams loads and attempts to sign in, it is trying to use the internal domain account - user@internal.companyA.co.uk as default.

Is there a way to change this behaviour across all users so that Teams automatically pulls the new email address from Outlook?

1 Reply
Best Response confirmed by ThereseSolimeno (Microsoft)
Solution

@stewietm Hey, as far as I know Teams will always try and log into the domain-joined PC account. But you can use the following registry key to turn off pre-population of the UPN in the sign-in prompt.

 

Computer\HKEY_CURRENT_USER\Software\Microsoft\Office\Teams
SkipUpnPrefill (REG_DWORD) 0x00000001 (1)

 

For reference and guidance.

 

'Teams will always log into the domain-joined PC account'

https://docs.microsoft.com/en-us/microsoftteams/troubleshoot/known-issues/teams-defaults-to-domain-j...

 

'Sign in to Microsoft Teams using modern authentication'

https://docs.microsoft.com/en-us/microsoftteams/sign-in-teams