Sharepoint: Header Field Too Long
You will likely receive this error if you open a lot of SharePoint documents in a short space of time.
The solution is to delete the cookies for the site that is having issues.
An alternative to avoid this error is to create a shortcut to the SharePoint folder in your OneDrive and sync your OneDrive to your local PC. Please raise a support ticket if that is something you would like to do.
1. Go to Settings in Edge:
2. Go to Cookies and site permissions, then Manage and delete cookies and site data
3. Go to See all cookies and site data:
4. Search for the URL of the SharePoint site and expand the list:
5. Delete the cookies for the SharePoint site that is having issues.
