Faced some troubles while installing TMG and wanted to share the Experience.
Setup failed to install ADAM. r n (0x80074e46)
By analyzing the Log files found in %windir%tempISAADAM_INSTALL_XXX
This refers to communication issue between the TMG Server and AD.
To TS this, you may need to review the connection Trust with the AD using nltest command;
Also check for the Connections Binding; as the AD facing interface should come first.
If this does not work, it might not be related to connectivity with AD either Trust with DC. This might be for some Policies restrictions. To troubleshoot this you need to disjoin the Server from the Domain, Install the TMG and when success, you may re-join the domain.
Near to 10 years in the IT service delivery, and since 2013, I have managed 25 experts and with them, we delivered 700 successful projects, through 10k Man days of service, added to $100M hardware to draw a 700 beautiful IT infrastructure architecture. Experience and result-oriented approach, side by side with professionalism and team-work achieved a strong track record in developing and implementing successful strategic business plans, demonstrating a strong technical, leadership, business, communication, presentation and analytical competencies.
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