What is this in the URL

Can anyone tell me what this is that getts added to my website URL


I browse to this  


it loads fine but the below characters get added((S(pe1vhj5yxhqdlgdk0al0kfyt))). What are they?  they change everytime the page is refreshed.

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EdAuthor Commented:
more info, its since I added this to the web.config file...

    <sessionState mode="InProc"

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käµfm³d 👽Commented:
In your web.config, do you notice that "cookieless=true" setting? That is what those crazy characters are. This is how ASP.NET achieves session state without the client having cookies enabled.

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EdAuthor Commented:
Maidine FouadEngineerCommented:
Well you are using cookieless sessions :


Ps: Bad Security practice ,unless you know what your doing , you could get your sessions hijacked
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