The problem is that the user is missing the appropriate cookie, as stated in the comments and another answer. However, you donβt have to go to such complicated lengths to pull out a cookie from a remote source, you can simply load the resource from this site into your html. Downloading the resource will set the cookie in the users browser. Thus, when the user clicks on the link, they already have a cookie.
In the example below, I load the parent page into a hidden iframe, but if you find that the image also loads a cookie, you can simply add this without worrying about the iframe.
<iframe src="https://sjobs.brassring.com/TGWebHost/searchopenings.aspx?partnerid=25222&siteid=5011" style="display:none"></iframe> <a href="https://sjobs.brassring.com/TGWebHost/jobdetails.aspx?SID=%5eHN7W7Qzw%2fF7gatWoBM6cE0ccmSO%2fucQkl75UsUrOYMnVywG9mXDR2RR1QJ0dl_slp_rhc_16&jobId=790214&type=search&JobReqLang=1&recordstart=1&JobSiteId=5011&JobSiteInfo=790214_5011&GQId=1640">Because the hidden iframe adds the cookie, this link works now!!</a>
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