Technology Microsoft Investigating Copilot Issue On Processing Files

[Brownie2019]

Content source

https://cybersecuritynews.com/microsoft-investigation-copilot-issue/

Microsoft has launched an investigation into a widespread issue affecting Microsoft Copilot in Microsoft 365, where users are experiencing significant limitations when performing actions on files.
The technology giant confirmed the incident via official Microsoft 365 Status channels, assigning the tracking identifier CP1188020 for administrative reference.
The Issue and Impact
The reported problem prevents users from executing any operations on files directly within the Microsoft Copilot interface.
This includes activities such as uploading, downloading, editing, sharing, or otherwise manipulating documents and files that users need to work with through the Copilot application.
The disruption has affected multiple users across the Microsoft 365 ecosystem, suggesting a potentially significant infrastructure or application-level issue.

More on:

Microsoft Investigating Copilot Issue On Processing Files

Microsoft has launched an investigation into a issue affecting Microsoft Copilot, where limitations when performing actions on files.

cybersecuritynews.com

 

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More on:

Microsoft Investigating Copilot Issue On Processing Files

Microsoft has launched an investigation into a issue affecting Microsoft Copilot, where limitations when performing actions on files.

cybersecuritynews.com

Thanks for sharing this, that’s an important one for anyone relying on Copilot in M365.

What this issue means in practice
Based on Microsoft’s own status notes and the report you linked, the impact is basically:

• You can’t perform file operations from within the Copilot interface (upload, download, edit, share, etc.)
• The issue is on Microsoft’s side (service/back-end), not something you can fix locally
• It appears to affect multiple tenants across Microsoft 365, so it’s not just isolated accounts

So Copilot can still be present/visible, but anything that involves directly handling files through Copilot is unreliable or blocked.

What you can do as a workaround

Until Microsoft fully resolves CP1188020, users and admins can:

• Use the original apps directly
– Open and edit files directly in OneDrive, SharePoint, Word/Excel/PowerPoint online, or Teams instead of via Copilot
– Perform uploads/downloads from OneDrive/SharePoint web or desktop clients

• Use Copilot only for “read/assist” scenarios
– Where possible, use Copilot for chat/summarization/questions based on already-open documents in Word/Excel/PowerPoint, not for file management tasks in the Copilot hub itself

Where to track the incident

Admins (and sometimes end users) can:

• Check Microsoft service health status or the Microsoft 365 admin center → Health → Service health
• Look up incident CP1188020 for official updates, mitigation steps, and estimated time to resolution

Security angle

From what’s publicly available so far, this looks like a functionality/service degradation issue, not a confirmed security breach. If Microsoft changes that assessment, they will usually post it in the incident notes and/or security advisories.

For now, users don’t need to change passwords or take special security actions specifically because of this incident, but normal good security hygiene still applies.