Custom Login Form Error

Question

Hello, after I implemented my Membership Provider and got it working i´m trying to implement the login form. After the process of user password validation is complented (Not done by membership provider, it only checks if user exists in DB) is completed,
I get the error Could not retrieve the IIS Settings. Parameter name: context]
The method I use is:
SecurityToken token = SPSecurityContext.SecurityTokenForFormsAuthentication(new Uri("http:\\localhost:9090", 'cmp', 'crp', 'username' , 'password'));//Notice I input the URL manually for testing
I also tried using (SPContext.Current.Web.Url) no luck either
Any help will be greatly appreciated!

Answer 1

Hi,
According to your description, my understanding is that after the validating user authorization, it occurs the error.
I suggest you can go to the Central Administartion => System Settings => Configure alternate access mappings.
Click on "Edit Public URLs", select Your app in "Alternate access mappings collection" and then fill up "Internet" textbox.
If the issue still exists, I suggest you can use Fiddler to track the web request.
Here is a similar thread for your reference:
https://social.technet.microsoft.com/Forums/sharepoint/en-US/6b02dfe8-5594-4d25-991a-51ac9a0528b7/sharepoint-2013-fba-errorcould-not-retrieve-the-iis-settingsparameter-name-context?forum=sharepointadminprevious
Fiddler:
http://www.telerik.com/fiddler
Thanks
Best Regards
Jerry Guo
TechNet Community Support