Recently we’ve seen some cases where users were unable to download files larger than 4GB when they were using ISA 200x as a forward proxy server. When the user tried to download a large file, e.g. an ISO image, they would see the download stop after the client had downloaded only a small chunk of…
Year: 2010
Forefront TMG/UAG Help Wanted at Microsoft in Stockholm
The Microsoft TMG/UAG Server support team in Stockholm is looking to hire a Full Time Employee. If you’d be interested to come and work with us and learn more about TMG/UAG internals than you probably would anywhere else in the world (apart from Redmond maybe), then this might be the job for you. Although you’ll…
TMG Quick Tip: Unable to Join a TMG to an Existing Array
On this TMG quick tip the troubleshooting scenario is very straight forward, consider the following: TMG administrator is trying to create a TMG 2010 Standalone Array in Workgroup (or Domain) and he gets the error below while trying to join Server to an array: After reviewing the TMG log file “ISA_JoinArray” log in %temp%…
Clients are unable to access shares on a remote network when using TMG as VPN Server in a Site to Site Scenario
Recently I came across a scenario where we had a PPTP Site-to-Site VPN between two TMG servers. We were able to access the shares of one TMG server from the other but we were unable to access the shares in the opposite direction as shown in the figure below: Live logging was enabled on TMG…
Easy Migration of WebSense Settings in Forefront TMG 2010
Customers who have an existing Websense® installation and want to move to Forefront Threat Management Gateway (TMG) as a Secure Web Gateway can migrate without creating rules from scratch. SecureGUARD (http://www.secureguard.at/Shop/ ) provides the Web Configuration Migration Wizard, a migration tool that converts an existing Websense configuration to a Forefront TMG 2010 installation, with reduced…
Update Center for Microsoft Forefront and Related Technologies
Have you ever wondered what is the latest public hotfix or update available for ISA, IAG, TMG or UAG? Good news!!!!!!!!!!!!!! We have launched the Update Center for Microsoft Forefront and Related Technologies where you can now go and check for the latest updates related to any forefront product. The site is located at http://technet.microsoft.com/en-us/forefront/ff899332.aspx…
Problems when installing Exchange 2010 Service Pack 1 on a TMG configured for Mail protection
TMG can be configured in a Mail protection role. In such configurations Forefront Protection for Exchange and Exchange Server (edge transport role) are installed on the same machine as TMG. We have identified problems when installing Microsoft Exchange Server 2010 Service Pack 1 (SP1) that was released last week on such deployments. Update: A fix…
Crashes (svchost and Internet Explorer) while accessing Internet through ISA Server
Introduction This post is about two scenarios which involved ISA server and third party content application. Let’s go over each one of those and the troubleshooting steps involved in order to fix it. Scenario 1 ISA was doing a Proxy Chain with a third party product, when the client (using Windows XP SP2 with Internet…
Hyper-V Update
Today, the Hyper-V team released a few important Hyper-V updates in a single package via Windows Update. These updates have been publicly available for some time now, but they’re now including these as a single roll-up for the convenience of customers. There are three issues resolved with this update: · Compatibility with Intel Nehalem…
Unable to Receive E-Mails from the Internet using E-Mail Protection feature on Forefront TMG 2010
Introduction E-Mail Protection feature on TMG is one of the features that allows TMG to leverage other resources available in the environment. In this case, TMG uses Exchange Edge technology as well as Forefront Protection for Exchange. Before start reading this post, make sure to get familiarized with E-Mail Protection feature on TMG by reading…