SharePoint Document Issues

Fix 'Upload Is Invalid' Error in SharePoint Hyperlink Columns

Bushra Parveen Oct 10, 2026 869 views

Question details

The user is unable to save a hyperlink and its alternative text in a SharePoint or Microsoft Lists column, resulting in an 'Upload is Invalid' error.

Fix 'Upload Is Invalid' Error in SharePoint Hyperlink Columns

Product: Microsoft SharePoint / Microsoft Lists
Device & OS: not provided
Scenario: Attempting to add or update a URL in a hyperlink column within a SharePoint list or Microsoft List.
Observed behavior: The system rejects the input with an 'Upload Is Invalid' error message, typically due to unsupported special characters in the underlying Microsoft Team name.

Before you start

Verify that you have administrative permissions for the Microsoft Team or SharePoint admin center, as resolving this issue may require renaming the site URL or creating a new list.

Solution 1Recommended

Remove Special Characters from Team and Site Names

This is the primary fix, as the error is typically caused by unsupported characters in the original Microsoft Team name that generated the SharePoint site.

Microsoft has identified that special characters in a Team's name can corrupt the underlying SharePoint site URL, leading to hyperlink saving failures. Resolving this requires adjusting the naming convention at the administrative level.

Check the Microsoft Team name

Review the name of the Microsoft Team that created the list. Ensure it starts with a letter and does not contain special characters.

Identify unsupported characters

Look for and remove hyphens, commas, semicolons, colons, periods, question marks, apostrophes, parentheses, brackets, or braces in the team name.

Rename the SharePoint site

Since renaming the Team does not automatically update the SharePoint site URL, ask a SharePoint administrator to rename the site URL using the SharePoint admin center.

Create a new list (if necessary)

If renaming the site URL is not feasible, create a new Microsoft Team with a simple, character-free name and generate a new list there.

Remove Special Characters from Team and Site Names

Naming Convention Best Practices: Always use short, simple names starting with a letter when creating new Microsoft Teams to prevent list URL conflicts and integration issues.

Solution 2

Use the Teams Mobile App as a Temporary Workaround

If you cannot immediately change the site name, updating the list via the mobile app may bypass the web interface error.

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Frequently Asked Questions

Why does the 'Upload Is Invalid' error only happen on specific SharePoint lists?

This error is directly linked to the naming convention of the Microsoft Team that created the list. If the Team name includes special characters, it generates an incompatible underlying SharePoint URL that disrupts hyperlink column data saving.

Will renaming my Microsoft Team automatically fix the SharePoint URL?

No, renaming a Microsoft Team only changes its display name. The underlying SharePoint site URL remains the same. A SharePoint administrator must manually rename the site URL in the admin center to resolve the issue entirely.

What special characters should I avoid when creating a Microsoft Team?

To prevent list integration issues, avoid using hyphens, commas, semicolons, colons, periods, question marks, apostrophes, parentheses, brackets, and braces. Always start the team name with a letter.

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