Windows Server 2012 R2 with the Active Directory Federation Services role installed and configured. We will assume you use Windows 8.1 and Visual Studio 2013, and have a Relying Party configured in AD FS that can be used to test the custom attribute store. In this example a custom attribute store will be created using Visual C#. May 21, 2013 Windows Server 2012 Essentials SDK Installer is a tool that helps you install the Windows Server 2012 Essentials SDK. It has Visual Studio® 2012 samples and templates that a developer can use to easily create applications for Windows Server 2012 Essentials. Oct 21, 2015 The application server has the.NET redistributable installed, but it does not have the.NET SDK installed, therefore this folder did not exist on the server, and there was no gacutil.exe. One solution is to download and install the Microsoft Windows SDK for Windows 7 and.NET Framework 4. How to Install a DLL to the GAC on Windows Server 2012 Using Only PowerShell In scenarios where adding a DLL to the Windows GAC (global assembly cache) using gacutil.exe does not work, or needs to be scripted, you can use PowerShell.
While doing an install of SharePoint Server 2007 on Windows Server 2008 R2, my customer and I bumped into a problem: we couldn’t manually add some assemblies to the Global Assembly Cache (GAC). Obviously, UAC (User Account Control) was blocking us… but all of the standard tricks for jumping through UAC were failing. We tried:
Gacutil Missing Windows Server 2008 R2
- Start a cmd prompt with “Run as administrator” and then typing “explorer” (which in theory launches explorer as the UAC’d admin) to launch two windows. FAIL. My guess is that the Explorer process doesn’t receive the credentials of the UAC’d administrator when it launches.
- run GACUTIL through a UAC’d command prompt… FAIL.(GACUTIL isn’t officially supported for production installs anyway).
- “Disable” UAC. FAIL. Funny thing about 2008 R2… you never ACTUALLY disable UAC. You can tell it not to prompt you… but it will still roadblock you if something absolutely requires local administrator rights to accomplish.
Windows Server
Then chat with a colleague brought up an idea…is there some policy getting in the way?
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Windows 8.1
I doubted that there was any specific group policy being pushed around UAC… that’s somewhat atypical. But what about a local policy?
There’s an entire list of local policies related to UAC…
After doing some looking around, I resolved to focus on the policy highlighted above: User Account Control: run all administrators in Admin Approval Mode. It was Enabled on their server.
First, About “Admin Approval Mode”. Taken literally, Admin Approval Mode means that any action that should only be achievable by an administrator must go through UAC’s “Admin Approval” (the secure screen that presents the approval). By default (as listed above), actions that require Administrator rights must go through the “Admin Approval Mode” process… even if the person doing the action is part of the Administrators group. Setting this to “Disabled” effectively means that Admin Approval Mode is no longer required for members of the local Administrators group… effectively disabling UAC entirely for those users.
So, we disabled it and rebooted (required for changes to the local security policy).
Our drag-and-drop to add assemblies to the GAC now works. Happiness ensued.
IMPORTANT: Disabling this can make it easier for malware to compromise your system. I encourage this to be disabled only temporarily so that the specific actions required may be taken, then re-enabled (along with the associated reboot) immediately at completion.
Gacutil Windows Server 2008 R2
If you cannot change this policy, you may need to chat with your Active Directory Group Policy administrators, as it is possible to force this and/or override the local security policy with domain group policies.