I am moving a web site from Windows Server 2012 to Windows Server 2022. When I open my web site, I receive the error message: Bad Request – Request Too Long HTTP Error 400. The size of the request headers is too long.

When I inspected the headers, they were only 640 characters long. I have cleared my cache and flushed DNS to no avail.

This error doesn’t happen all the time, just sporadically. How do I fix this so that it doesn’t happen.

​I am moving a web site from Windows Server 2012 to Windows Server 2022. When I open my web site, I receive the error message: Bad Request – Request Too Long HTTP Error 400. The size of the request headers is too long. When I inspected the headers, they were only 640 characters long. I have cleared my cache and flushed DNS to no avail. This error doesn’t happen all the time, just sporadically. How do I fix this so that it doesn’t happen.  Read More

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