As TMG RTM is very close, the amount of downloads for TMG Beta 3 is growing and with that, some users are facing some issues while trying to install TMG Beta 3. This one in particular refers to an error trying to check domain membership while installing ADLS and if you open the file %windir%\temp\ ISAADAM_INSTALL_XXX.log you might see the following error:
Also, keep in mind that if you are trying to install TMG Beta 3 on Windows Server 2008 R2 it might not install or it might install and do not work properly, the reason why is because TMG Beta 3 was not projected to run on Windows Server 2008 R2 therefore is not supported (for this release – Beta 3). Don’t worry, by TMG RTM version we will be fine with that, however if you want to play with TMG Beta 3 now make sure to install Windows Server 2008 version (no R2).If you are indeed using Windows Server 2008 (only) and you are receive this error on the log, than go ahead and start troubleshooting domain membership problems, secure channel, RPC, etc…you know the drill J.
If you need to discuss technical issues about TMG Beta 3, Microsoft has an open forum for that on the link below: