Problem
When integrated Windows Authentication (IWA) is being used as the authentication method and an operation is attempted in the Desktop Client, such as checking in a schema file or attaching files to a design document, the operation fails, and the following error is received:
"This request requires buffering data to succeed."
Solution
This error can be caused by the IIS property authPersistSingleRequest being set to True or the IIS property authPersistNonNTLM being set to False. To resolve the problem:
-
For resolution at the site level, set authPersistSingleRequest to False. A sample set of command lines to be run at the command prompt follows:
cd %SystemRoot%\System32\inetsrv
appcmd.exe set config -section:system.webServer/security/authentication/windowsAuthentication /authPersistSingleRequest:"False" /commit:apphost -
For resolution at the server level, set authPersistNonNTLM to True. A sample set of command lines to be run at the command prompt follows:
cd %SystemRoot%\System32\inetsrv
appcmd set config /section:windowsAuthentication /authPersistNonNTLM:true
For more information, refer to http://support.microsoft.com/kb/954873.