An authentication error has occurred; this could be due to CredSSP encryption oracle remediation

Windows ServerThis error first came up early in 2018, but I’ve stumbled across it a couple of times recently and had to hunt around for the solution, so I am posting it here so I know where to find it next time.

Microsoft released an update to address vulnerabilities for the Credential Security Support Provider protocol (CredSSP) used by Remote Desktop Protocol (RDP) connections for Windows clients and Windows Server.

Since that hotfix came out, if you try to connect from a patched machine to an unpatched one, you receive this error:

CredSSP error

Remote Desktop Protocol

An authentication error has occurred.
The function requested is not supported.

Remote computer: {server name}
This could be due to CredSSP encryption oracle remediation.

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Disable IE Enhanced Security Configuration

Windows ServerI do a lot of work in virtual machines and this work often involves using the web browser; this is usually just for web client, SSRS or other similar local pages, but even then Internet Explorer Enhanced Security Configuration will get in the way and need to be disabled.

I never remember where the setting for this is, so I am posting here to make it easy to find in future. To change the setting, open Server Manager; in the left pane, click Local Server:

Server Manager > Dashboard

In the main section of the page, click the word ON next to IE Enhanced Security Configuration:

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New GP Compatibility Page Available

Microsoft Dynamics GPI’ve added a GP Resources section to this site; as well as links to the GP Table Reference, I’ve created a Microsoft Dynamics GP Compatibility page which shows the compatibility with SQL Server, Windows Server and Windows from Dynamics GP 2010 through to 2018.

If you see any errors, or can contribute information on supported versions, prior to 2010, please contact me with the information.

How To Create A Domain Controller

Windows ServerThe release of Management Reporter brought several advantages over FRx; x64 compatibility, replacement of the Access database with SQL Server and a modern client among them. However, one of the downsides is that Management Reporter requires a domain to be available for both the installation and running.

Where FRx could be run on any PC or laptop regardless of the operating system, Management Reporter can only be run on a server OS. This means that the Business Development Managers, and I, need either a laptop with Windows Server 2008, or better the R2 version, installed or we need a VM with the same. To make everyday life easier I opted for the latter as I can install it once and then copy the VM between machines.

I am a Microsoft Dynamics GP consultant by training, certification and experience but I don’t have a huge amount of experience with Active Directory. I am the most knowledgeable here about installing GP and Management Reporter though, so it falls to me to do the setup of the demo systems and I figured I might as well do the full monty rather than getting someone else to install the operating system and then passing it back to me.

To this end I needed to learn how to install and configure Active Directory Domain Services (ADDS) and I thought it best to document here for anyone else interested and also for my own future reference. Continue reading “How To Create A Domain Controller”