error 80A20305

I have been getting this error when trying to add a Test account: "An unknown error has occurred. Error code: 80A20305"

Is there no solution for this? I can't find any articles and only this single post about this error. I've tried restarting the Xbox, restarting my modem, creating an entire new sandbox, all to no avail. Is there any solution for this error?

DID you fix it I got the same one??

No not at all, I cannot connect to XBL at all, I am not sure what is happening, I know my internet is working fine and ive never had issues with this console but since the most recent update my xbox wouldnt download/install it properly and i havent been
able get online at all its quite lame.

Hey mate, can you please list the exact errors you're encountering? Also, go ahead and take a few minutes to answer the bold questions

here, as we'll need that information to help resolve the network issues.

Well, first things first.... If you want help, conduct yourself in a pleasant and respectable manner. Secondly, we can't help unless you describe a problem fully. Even then, we can only go through steps to try to help, so you need to cooperate. If the answers
don't work, getting angry is not the course of action, it means we need to dig deeper.

If someone reads the issue and directs you to a solution, try it out. If it doesn't work, let us know so we can dig deeper.

And most importantly, understand that we here on these forums are not microsoft/xbox employees, we are gamers such as yourself trying to help out. When an issue requires contacting official support, they wont put up with this kind of attitude over the phone.

So again I say, please reply and fully explain each issue you are having so we can work through this.