There are unfamiliar characters in domains

It is your session information.
in your web config file you have something like this:

<sessionState mode="InProc" cookieless="UseUri" timeout="60">

or

<sessionState mode="InProc" cookieless="AutoDetect" timeout="60">

(the important part for your question is cookieless part)

if you do not want that just change this part cookieless="UseUri" to something like cookieless="UseCookies"

Note that by doing this, your clients should accept cookies.

also take a look at this one:

http://msdn.microsoft.com/en-us/library/aa479315.aspx[^]

hope this can help.