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Hi,<br />
<br />
I am having a problem on one of my sites with TMG 2010. It is working as the proxy server. The users that are connecting through it are constantly getting authentication pop-ups when working on the internet. They then enter the correct details and it either goes away or comes straight up again. The AD user accounts aren’t getting locked out so the details they are using are correct. It just happens randomly and to all the users. I checked if there was a time difference between the TMG server, the client box as well as the DC and that’s all fine… They are not experiencing any other authentication issues at all – just this one on the proxy server…<br />

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Hi,

I am having a problem on one of my sites with TMG 2010. It is working as the proxy server. The users that are connecting through it are constantly getting authentication pop-ups when working on the internet. They then enter the correct details and it either goes away or comes straight up again. The AD user accounts aren’t getting locked out so the details they are using are correct. It just happens randomly and to all the users. I checked if there was a time difference between the TMG server, the client box as well as the DC and that’s all fine… They are not experiencing any other authentication issues at all – just this one on the proxy server…


TMG constant authentication pop up

Microsoft Forefront, formerly known as Internet Security and Acceleration Server (ISA Server), is a network router, firewall, antivirus program, VPN server and web cache that runs on Windows servers. It includes identity management and protection systems, and discontinued systems for threat management and network protection, along with protection for Sharepoint and Exchange. The scope of discussions includes forward and reverse proxy, application and service publishing, virtual private networks (VPNs), outbound access rules, SSL certificates and network routing within either a single node or an highly-available array pairing.

Microsoft Forefront ISA Server

The Internet Protocol (IP) is the principal communications protocol in the Internet protocol suite for relaying datagrams across network boundaries, organized in abstraction layers, traditionally called "Link," "Internet," "Transport" and "Application”. Its routing function enables internetworking, and essentially establishes the Internet. IP defines packet structures that encapsulate the data to be delivered. It also defines addressing methods that are used to label the datagram with source and destination information.