
The HTTP request to the server contains the Kerberos token in the If the HTTP header or packet size increases past the limits that are configured on the server, the server may reject the request and send an error message as the response. This issue may occur if the user is a member of many Active Directory user groups. This response could be generated by any HTTP request that includes Windows Remote Management (WinRM). HTTP 400 - Bad Request (Request header too long) However, instead of receiving the expected webpage, you receive an error message that resembles the following one:

The website is configured to use Kerberos authentication. Original product version: Windows Server 2016 Original KB number: 2020943 SymptomsĪn HTTP request that needs Kerberos authentication is sent from a browser to a website that's hosted on IIS.

This article helps you work around the HTTP 400 error that occurs when the HTTP request header is too long. If the error persists, replace the product.When an HTTP request that needs Kerberos authentication is sent to a website that's hosted on Internet Information Services (IIS) and is configured to use Kerberos authentication, the HTTP request header would be very long. If the error persists, replace the Low Voltage Power Supply: Low voltage power supply PCB assembly - Input voltage 110VAC-127VAC RM2–7913–000CN Low voltage power supply PCB assembly - Input voltage 220VAC-240VAC RM2–7914–000CN5. If a power transformer is used to convert 220V power to 110V, verify that the transformer power rating is sufficient to operate the product.4. In most cases, no damage is caused to the product. If the product is rated 220V and is plugged into a 110V outlet, this error might occur. Check the voltage label on the back of the product. Plug the product directly into the wall socket and turn the product power on.3. Turn on the power and wait for the product to initialize.2. Turn off the power by using the power switch, and then wait at least 30 seconds.b. Causes: Low voltage power supply malfunction.Description: The product has experienced an error with the low voltage power supply.
