File Format & Compatibility

How to Fix CSV Upload Error When Creating a Microsoft Teams Rubric

Maira Mehtab Oct 9, 2026 869 views

Question details

Users are unable to upload a CSV file to create a grading rubric for an assignment in Microsoft Teams.

How to Fix CSV Upload Error When Creating a Microsoft Teams Rubric

Product: Microsoft Teams
Device & OS: not provided
Scenario: Creating an assignment in Microsoft Teams and attempting to import a grading rubric via a CSV file.
Observed behavior: The CSV file fails to upload and displays an error, regardless of the specific CSV format, encoding, or device used.

Before you start

Ensure your CSV file uses UTF-8 encoding and follows the strict column and row formatting required for Teams rubrics before attempting the upload again.

Solution 1Recommended

Verify File Format and Report to Microsoft

Since this is a known reproducible issue on the Microsoft Teams platform, verifying your file structure and escalating it to the product team is the recommended approach.

Microsoft Teams rubric uploads are highly sensitive to formatting errors. However, if multiple formats have failed, this is likely a platform-level bug that requires investigation by the Teams development group.

Test a Simple Sample File

Create a very basic 2x2 rubric in a blank spreadsheet and save it as a standard Comma Separated Values (CSV) file. Attempt to upload this test file to rule out complex formatting issues in your original document.

Record the Error Details

Take a screenshot of the exact error message that appears when the upload fails. Note the assignment type, your operating system, and the steps you took.

Submit Feedback via the Teams Portal

Open Microsoft Teams, click on 'Help' in the bottom left corner, and select 'Give feedback' or 'Report a problem'. Attach your screenshots, describe the file structure, and mention that the issue is reproducible across multiple devices.

Temporary Workaround: While waiting for a resolution from Microsoft, you can manually build the rubric directly within the Teams assignment creation interface by clicking 'Add rubric' and choosing 'New rubric'.

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Ensure Clean CSV Formatting with WPS Office

While the rubric upload issue requires a fix from Microsoft Teams, you can ensure your CSV files are perfectly formatted and cleanly encoded using WPS Spreadsheet. WPS Office is a free, lightweight alternative to Microsoft Office that guarantees precise data handling and seamless compatibility.

1. Open Your Rubric Data: Launch WPS Spreadsheet and input your grading rubric criteria into the rows and columns.
2. Save as CSV: Click on 'Menu' > 'Save As', select the location, and choose 'CSV (Comma delimited) (*.csv)' from the file format dropdown.
3. Confirm Encoding: Ensure you are using standard encoding to avoid delimiter conflicts when uploading to online platforms.

Fully compatible with Microsoft Excel CSV formatsFree and lightweight spreadsheet editing toolEasily encode CSVs in UTF-8 to prevent delimiter errorsFamiliar user interface requires no learning curve

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Frequently Asked Questions

What is the correct format for a Teams rubric CSV?

A Teams rubric CSV must follow a specific grid structure where rows represent grading criteria and columns represent the grading scale (e.g., Excellent, Good, Fair, Poor). The file must be saved in standard comma-separated format, preferably with UTF-8 encoding.

Why does Microsoft Teams reject my Excel-generated CSV?

Depending on your region, Excel may use semicolons instead of commas to separate values in a CSV file. Teams expects standard comma delimiters. You may need to adjust your system's regional settings or use a different spreadsheet tool to force comma delimiters.

Can I reuse a rubric if the CSV upload fails?

Yes. If you manually create the rubric inside the Teams application, you can reuse it for future assignments by selecting 'Add rubric' and choosing a previously saved rubric from your list.

Document & File Issues