Additionally, the HTTPERR logs on the Microsoft Exchange Server 2010 or Microsoft Exchange Server 2007 Client Access server may show one of the following for the HTTP resource the user was requesting:
Also, you may see the following in the Exchange Server <Exchange Server Install Path>\Logging\HttpProxy\<Http resource> logs on the Exchange Server 2013 Client Access server:
- Reduce the Active Directory groups assigned to the user.
- On all Exchange 2010 CAS, increase the MaxFieldLength and MaxRequestBytes entries to the following values. This change requires a restart of the Client Access servers. The recommended value for Exchange 2010 coexistence is 65536. HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\HTTP\Parameters
MaxRequestBytes DWORD 65536 (Decimal)
MaxFieldLength DWORD 65536 (Decimal)
Note: If the entries do not exist for MaxFieldLength and MaxRequestBytes create the keys manually.
For more information, please see the following article in the Microsoft Knowledge Base: 2020943HTTP 400 - Bad Request (Request Header too long)" error in Internet Information Services (IIS)
ID do Artigo: 2988444 - Última Revisão: 1 de out de 2015 - Revisão: 1