I also have this issue, just updated to 6.1.6 and can't add hostname.

Looking for a way to somehow change this manually as current hostnames is obsolete. Where in db can I change? Or is it a file on disc?

David,

Its in the database table umbracoDomains

Regards

Ismial

Yes I found it, thanks. Guessing this error does not occur in later versions.

I get the same, has this been logged on the bug tracker to be fixed? I had to modify mine using the database.

Actually, I think the error is because the ajax request sends a lot more cookies than the normal pages. I think this is related to the "Authentication Cookie Domain" setting, i.e. I was trying to move to a lower subdomain, but the authentication cookie was set to a higher domain, so it was obviously using the wrong cookie for the ajax request to save the new Domain value.
This is tricky, but should probably be mentioned in the error message.

Hi 

I got the same issue on umbraco 6.1.6, i cant save "culture and domainname"

Any solution for this, other than update the database manally. 

I got this error: Failed to load resource: the server responded with a status of 401 (Unauthorized)

1. Request URL:
   http://template.local/umbraco/Api/DomainsApi/SaveLanguageAndDomains
2. Request Method:
   POST
3. Status Code:
    
   401 Unauthorized

Rene

Same in 6.1.6.

Did anyone find the cause of this?

Cheers

For all who is still struggling with this issue:

Delete clientIDMode="AutoID" from the line below in the web.config file.

<pages enableEventValidation="false" controlRenderingCompatibilityVersion="4.0" clientIDMode="AutoID"></pages>

Has anyone had any luck with this? I have suddenly started having this problem after adding many different sites and hostnames in the past. Umbraco has not been updated and the correct version is in web.config. No errors are shown in the log table and there is nothing in the tracelog. I also see the message {"Message":"Authorization has been denied for this request."} and it's becoming a strange problem.

I registerted routes with different prefix (appapi) and have a request with appapi: .../appapi/DomainsApi?action=/SaveLanguageAndDomains

I hit this error myself.

My problem was having registered the webapi route manually like this in my OWIN startup.

// register default api route
GlobalConfiguration.Configuration.Routes.MapHttpRoute(
    name: "DefaultApi",
    routeTemplate: "api/{controller}/{action}/{id}",
    defaults: new { id = RouteParameter.Optional }
);

Apparently this will cause umbraco to behave the way described above.

My solution was to remove the owin registration and cave in and conform to the setup recommended by umbraco: https://our.umbraco.org/documentation/reference/routing/webapi/

And there by changing my api urls from

mysite.com/api/products/all

to

mysite.com/umbraco/api/products/all

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