When the option to select to add members to the role is selected the picker will pull all current members (their Guids) and pass them in so that they can be excluded from the current selection window (because they are already members). When the membership reaches 55 it will cause the string of Guids it is passing in to be too long to be handled by IIS's pre-set parameters.
Run the following command on the SMP server to extend the IIS maximum:
%systemroot%\system32\inetsrv\appcmd.exe set config /section:system.webServer/security/requestFiltering /requestLimits.maxQueryString:"6074" /commit:apphost
This setting can also be changed (and the current setting viewed) by doing the following:
* Open IIS Manager * Browse down to "Default Web Site" * In the Features View, in the right pane, under IIS, double-click on "Request Filtering" * In the far right pane select the "Edit Feature Settings..." link. * The value in the bottom box "Maximum query string (Bytes):" is the value to change.
If, after changing the max query string to a higher value, the error still occurs then try a higher value until the error goes away.
SMP 7.1 SP2
Imported Document ID: TECH190418
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