"Request Header Fields Too Large" error

[Balubeto Balubeto]

Hi

I use Windows 11 25h2 and Microsoft Edge Beta.

When I try to access the App Script page with a Google account, I get the following error: “Request Header Fields Too Large.”

Why is this happening?

Thanks

Bye

[Jeremy Goff]

How to Fix It

Try these steps in order:

1. Clear Cookies for Script.google.com

   - Go to edge://settings/siteData

   - Search for script.google.com

   - Delete cookies and site data for that domain only.

2. Clear All Cookies and Site Data

   - Go to Settings > Privacy, search, and services

   - Under “Clear browsing data,” click “Choose what to clear”

   - Select Cookies and other site data and clear them.

3. Use InPrivate Mode

   - Open Edge in InPrivate browsing and try accessing the Apps Script page again. This bypasses stored cookies.

4. Reset Edge Settings

   - Visit edge://settings/reset

   - Click “Restore settings to their default values”

5. Try Another Profile or Browser

   - Create a new Edge profile or use Chrome/Firefox to isolate the issue.

Regards

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