TMG 2010 – Error “setup failed while registering Forefront TMG managed performance monitor” prompted while installing or repairing the TMG installation

It can happen while installing Forefront TMG 2010 or during a repair that we hit the following error: To this error is also normally linked to the ISA managed control service not starting correctly and errors as the following in the application event viewer: On the other hand it is also possible to hit the…


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%…


Resolving TMG Array Join Failures - Reporting Server Leftovers

Introduction Forefront TMG 2010 provides an enhanced array management feature known as array join / disjoin.  This article describes a problem that may be encountered as a result of a failure during this process, the solution you can apply as well as a discussion of how and why this problem occurs.   The Problem You…


Another TMG 2010 Installation failure with error 0x80070643

After writing the previous blog about issues during the TMG setup, I encountered another issue where the TMG install completed in 1 minute without any specific error. As soon as the install started and after walking through the initial couple of screens where we add the internal network the install screen just proceeded further to…


Troubleshooting ERROR: Setup failed to install ADAM.rn (0x80074e46) and 0x80070643 while trying to install TMG 2010

  Introduction Consider a situation where the TMG Administrator was getting an error while trying to install TMG 2010 RTM Standard Edition Server on a domain joined Windows 2008 R2 Server. The error message was: Setup failed to install ADAM.\r\n (0x80074e46) The interesting part of this problem was that even after reinstalling the Operating System…


Unable to Install Forefront TMG – “A computer restart is required” warning message

Issue: Consider a scenario where you are not able to install Forefront TMG 2010 with the error message below: Note: The problem persists even after restart the server. Cause: this issue can be caused due a Windows Installer problem, in order to fix that review the article How to resolve Common "Windows Installer" Problems. For…