List - Something went wrong: Invalid argument: 'headers' missing application ID header

Hi All,

Here is the update:

Current status: Further investigation regarding the aforementioned request handling issue revealed that a recent request handler change, intended to optimize processing of incoming request and responses for an unrelated feature, contained a code regression which interacted negatively with the code path that facilitates users' access to lists in SharePoint Online, resulting in impact. Our fix, which addresses this regression, is continuing to progress throughout affected environments without issue and, as previously stated, should be providing relief to some users whose environments it's already reached. According to our monitoring and deployment projections, we still anticipate full propagation and subsequent resolution for all users by our next scheduled update on Wednesday, August 9, 2023.

Scope of impact: Your organization is affected by this event, and any user attempting to access lists in SharePoint Online is impacted.

Start time: Monday, July 24, 2023, at 7:00 AM UTC

Estimated time to resolve: We anticipate resolution for all users by Wednesday, August 9, 2023.

Root cause: A recent request handler change, intended to optimize processing of incoming request and responses for an unrelated feature, contained a code regression which interacted negatively with the code path that facilitates users' access to lists in SharePoint Online, resulting in impact.

Next update by: Wednesday, August 9, 2023, at 11:00 PM UTC

Sincerely,

Jazlyn | Microsoft Community Moderator

Hi All,

Currently, we haven't received any reports or service health issues about this behavior. Given this situation, we do understand the inconvenience caused and apologize for it.

This isn't quite true.

I reported it as an issue via service health and it returned as "no issue found" - when there is as demonstrated by several of us all reporting the same issue starting this week with no changes to lists.

I also have a ticket raised via support to investigate.

Unfortunately it seems it takes quite a lot of people to report an issue before it finally gets acknowledged as an issue...

This should have been flagged in service health from 10am yesterday when it was reported to Microsoft.

I am getting the same error on a couple of lists as of today (never got it before and have not changed the lists),

If I use the side menu with the link to the list I get the error quite frequently but when I go to Site content and open the list I never get it.

This is the error message:

Something went wrong

Invalid argument: 'headers' missing application ID header

Well you currently have at least 65 people on this article telling you it's a problem. Maybe escalate and acknowledge that it's a problem instead?

Hi All,

Currently, there is an ongoing incident posted to the Service Health Dashboard (SHD) as incident SP664797.

Title: Users are intermittently unable to access lists in SharePoint Online

User impact: Users are intermittently unable to access lists in SharePoint Online.

More info: Affected users receive the following error when attempting to access lists: "Something went wrong: Invalid argument: 'headers' missing application ID header"

Current status: Our investigation has determined a recent feature update introduced a request-handling issue resulting in intermittent impact. We've developed and initialized the deployment of a fix to address this issue and anticipate this will complete, remediating the impact, by Wednesday, August 9, 2023. We're continuing to monitor the deployment as it rolls out and expect some users may see remediation as soon as our next scheduled communications update as the fix progressively saturates throughout the environment.

Scope of impact: Your organization is affected by this event, and any user attempting to access lists in SharePoint Online is impacted.

Start time: Monday, July 24, 2023, at 7:00 AM UTC

Root cause: A recent feature update introduced a request-handling issue resulting in intermittent impact.

Next update by: Friday, August 4, 2023, at 7:00 PM UTC

Your understanding is highly appreciated.

Sincerely,

Jazlyn | Microsoft Community Moderator