Is it possible to install Exchange 2007 without having access to the internet. I am attempting to installExchange in an isolated test environment that does not have access to the internet. It fails with the below error. Client Access Role PrerequisitesFailed Error:This computer requires a software update. Download and install the software from http://go.microsoft.com/fwlink/?linkid=74465.

Hello, Yes you can install in isolated environment but you need to install all prerequisite softwares/hotfix for it first. Check the prerequisite for Exchange 2007,download and install all hotfix or softwarein test environment and start installation. Exchange 2007 System Requirements If you still have any issue then you can check the setup log for detailed error.

Hello, According to the Linked ID indicates, you haven't installed pre-required .Net Framework 2.0 update KB926776. Based on the current situation, you need download the update from internet firstly and then copy it to the test environment for installing it, after installing it, you should pass this error. Meanwhile, for your convenient, I have listed some pre-required update to install Exchange 2007. NDP2.0-KB926776-x64 Windows PowerShell 1.0 English-Language Installation Package for Windows Server 2003 x64 Edition (KB926139) Update for Windows Server 2003 x64 Edition (KB931836) Regards, Jason