Copilot Not Working

How to Fix Microsoft Copilot 1 MB File Upload Limit Issue

Maira Mehtab Sep 20, 2026 869 views

Question details

Users are experiencing a strict 1 MB file upload limit when trying to upload documents to Microsoft Copilot and want to know if this maximum limit can be bypassed or increased.

Product: Microsoft Copilot
Device & OS: not provided
Scenario: Uploading files like PDFs to Copilot for analysis, particularly affecting education, faculty, and teacher accounts.
Observed behavior: Copilot rejects file uploads larger than 1 MB, displaying an upload limit error, with no clear documentation provided on whether this limit can be increased.

Before you start

Verify your specific Copilot client version and Microsoft account type (e.g., Enterprise, Education, or Personal), as file upload limits can vary across different subscription tiers.

Solution 1Recommended

Reduce Document File Size

Since the 1 MB upload limit cannot be manually changed in your settings, reducing the file size is the most effective workaround to successfully upload your documents.

By utilizing file compression or splitting large documents, you can comfortably bypass the 1 MB ceiling and allow Copilot to analyze the most essential parts of your text.

Compress the Document

Use a PDF compressor or document optimization tool to significantly reduce the overall size of your file without losing text quality.

Split the File

Divide your large PDF or Word document into multiple smaller files, ensuring each part is under the 1 MB threshold.

Upload in Sections

Upload these smaller document sections individually to Copilot, focusing only on the most relevant chapters or pages for analysis.

Tip: Text-heavy documents usually compress very well. Removing large embedded images from your document can instantly drop the file size below 1 MB.

Solution 2

Verify Copilot Client and Account Type

Different tiers of Microsoft Copilot have distinct capabilities. Checking your account type helps determine if you are subjected to stricter educational or free-tier limits.

Solution 3

Submit Feedback to Microsoft

Because this specific 1 MB limitation is poorly documented by Microsoft, submitting direct feedback helps prompt them to clarify the rules or increase the upload limits.

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Frequently Asked Questions

Can I manually increase the 1 MB file upload limit in Copilot?

No, the 1 MB upload limit is a server-side restriction set by Microsoft for certain account types and Copilot clients, meaning it cannot be manually increased or bypassed in your local settings.

Does the Copilot 1 MB limit affect all account types?

Not necessarily. The 1 MB restriction is most frequently reported by users utilizing Microsoft Education accounts (affecting both faculty and teachers). Users with Copilot Pro or Enterprise subscriptions might experience higher limits depending on their specific service agreement.

How can I bypass the file upload limit for PDFs?

The most effective way to bypass the limit is to use a PDF compression tool to reduce the overall file size below 1 MB. Alternatively, you can split a large PDF into multiple smaller documents and upload them one by one.

Where can I find official documentation on Copilot file limits?

Currently, Microsoft's official documentation regarding precise file size limits for Copilot uploads is limited and not clearly outlined. Users are encouraged to submit feedback directly through the Copilot app to request better clarification.

Microsoft Copilot Issues