CSOM for SharePointOnline user fields no longer returning Email

[HarminderSethi]

Target SharePoint environment

SharePoint Online

What SharePoint development model, framework, SDK or API is this about?

SharePoint CSOM

Developer environment

Windows

What browser(s) / client(s) have you tested

• 💥 Internet Explorer
• 💥 Microsoft Edge
• 💥 Google Chrome
• 💥 FireFox
• 💥 Safari
• mobile (iOS/iPadOS)
• mobile (Android)
• not applicable
• other (enter in the "Additional environment details" area below)

Additional environment details

Describe the bug / error

CSOM for SharePointOnline user fields no longer returning Email (null/empty). Code snippet attached

Steps to reproduce

1. Read SharePoint online list item with User field using SharePoint CSOM.
2. User field value does not return Email and only return LookupId and LookupValue

Expected behavior

1. User field value should return Email aparf from LookupId and LookupValue

[Ashlesha-MSFT]

Hello @HarminderSethi,
Thank you for bringing this issue to our attention. We will look into it and get back to you shortly.
If you don’t receive a reply within two working days, please use this escalation form to escalate.

[dcowleyrm]

I have also have this issue since 10th December 2025 on our tenant. Microsoft Graph no longer returns email address in MicrosoftGraphFieldValueSet from SharePoint list item, only LookupId and LookupValue. I have tested with Graph Explorer and can see that the Email value is null. I have logged a service request with Microsoft.

[VesaJuvonen]

thx @dcowleyrm also on flagging this and on opening a ticket with Microsoft. Good to have this tracked here for everyone, but let's also open direct tickets to Microsoft support where possible for faster resolution. Seems that this is impacted in both CSOM and in Microsoft Graph API surface.

[saqibmshabbir-eng]

Temporary fix is in your SP List create another column that references the persons e-mail you can then leverage this in your code.

[dcowleyrm]

Possible fix from Microsoft.
"User spUser = context.Web.SiteUsers.GetById(user.LookupId);
context.Load(spUser);
context.ExecuteQuery();"
And there is a Service Health alert for this issue https://admin.microsoft.com/adminportal/home#/servicehealth/:/alerts/SP1196502

[pourush89]

Any update on this?

Doing any workaround such as 'loading' user fields explicitly would require lots of changes in many places (where email string comparisons are being done)

[dcowleyrm]

I have had the following reply to my Microsoft Service Request.

Microsoft Product Group has recently completed preliminary testing on the proposed fix, and the results indicated that the issue was resolved, where the queries are now correctly returning the Author or Email field. The team is planning to roll out the fix to a larger testing environment and will continue to monitor the behavior of the updated code to ensure stability and expected performance. If no issues are observed, a production rollout will be initiated December 17th, and the full deployment may take up to 48 hours to complete.

[heinrich-ulbricht]

Narf. Took an hour of head scratching to find this issue. Glad to hear it'll be resolved soon.

[UPADHP07]

Any one able to see the email id with regards to this issue fix

[dcowleyrm]

Not yet showing for our tenant.

[lucas-kok]

Negative for our tentant as well