Mobile Number Discrepancy in Teams, Delve, and OWA Address Books

Hi @Ragavendhiran

Good day! Welcome to Q&A forum!  

Thank you for reaching out. I understand how confusing it can be when an incorrect mobile number appears in Microsoft Teams, Outlook Web Access (OWA), and Delve, even though it’s not present in Active Directory (AD), Azure AD, or the Microsoft 365 Admin Center.  

To help diagnose the issue, please clarify the following questions: 

Does the user have a linked personal contact in Outlook on the web that contains the incorrect number? 

If there is, kindly go to OWA → People → Open contact → Link contacts → Remove any linked personal contact with the old number. 

Is the user licensed for Teams Phone or assigned any Direct Routing/Operator Connect numbers?  

If the user has Teams Phone or Direct Routing, a number assigned for calling might appear as a “work” or “mobile” number in Teams. 

When was the last time you cleared the number from AD/Azure AD?  

Teams and profile cards can cache data for up to 72 hours, and the Teams desktop client can cache for 28 days. 

Have you asked the user to try clearing Teams cache? If not, please follow below instructions. 

Clear Teams cache for Mac: 

1.If Teams is still running, right-click the Teams icon in the dock, and then select Quit or press Command (⌘)-Q. 

2.In the Finder, open the /Applications/Utilities folder, and then double-click Terminal. 

3.Enter the following commands, and press Return after each command: 

rm -rf ~/Library/Group Containers/UBF8T346G9.com.microsoft.teams   rm -rf ~/Library/Containers/com.microsoft.teams2 

4.Restart Teams. 

 Clear Teams cache on Windows: 

A. Sign Out from Teams application. 

B. Go to File Explorer, paste “%appdata%\Microsoft\teams” in location box and press Enter. 

C. Clear files in “%appdata%\Microsoft\teams\blob_storage” location. 

D. Clear files in “%appdata%\Microsoft\teams\Cache” location 

E. Clear files in “%appdata%\Microsoft\teams\databases” location 

F. Clear files in “%appdata%\Microsoft\teams\GPUcache” location 

G. Clear files in “%appdata%\Microsoft\teams\IndexedDB” location 

H. Clear files in “%appdata%\Microsoft\teams\Local Storage” location 

I. Clear files in “%appdata%\Microsoft\teams\tmp” location 

J. Restart Teams and login your account. 

For reference: Clear the Teams client cache - Microsoft Teams | Microsoft Learn   

Kindly confirm that you cleared in the incorrect phone number in Azure AD (Entra ID) following these steps: 

• From the Admin Center: Users → Active Users → Manage contact information 

If you followed the above steps with no success, using PowerShell can help enforce the change:  

Get-MgUser -UserId ******@domain.com -Property mobilePhone,businessPhones 

Update-MgUser -UserId ******@domain.com -MobilePhone $null 

For reference:  

• Get-MgUser (Microsoft.Graph.Users) | Microsoft Learn 
• Update-MgUser (Microsoft.Graph.Users) | Microsoft Learn 

Moreover, kindly check SharePoint Online User Profile (Delve) as well. 

SharePoint Admin Center → User Profiles → Manage User Profiles → Edit → Clear “Cell phone”.  Please let me know how it goes or if there are any other concerns. I look forward to your updated response. 

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