解决方案
<system.webServer>
<!--<modules>
<remove name="FormsAuthentication" />
</modules>-->
<modules runAllManagedModulesForAllRequests="true" />
</system.webServer>
<system.webServer>
<!--<modules>
<remove name="FormsAuthentication" />
</modules>-->
<modules runAllManagedModulesForAllRequests="true" />
</system.webServer>