How can you check GAC assembly details Windows Server 2012? I managed to register a DLL via Powershell, now I need to verify that it is really done.
You are probably looking for the custom look of the GAC directory that you were familiar with in .NET versions prior to 4.0. Which stored the GAC in the c:\windows\assembly window and used a custom shell extension to flatten the directory structure into a list of assemblies.
The shell extension is no longer used for .NET versions 4.0 and up. You have .NET 4.5 on that machine, its GAC is stored in c:\windows\microsoft.net\assembly. You just get to see the actual directory structure. Locating the assembly isn't that difficult, start in the GAC_MSIL directory and you should have no trouble locating your assembly there by its name. Locate the folder with the same display name as your assembly. It will have a subdirectory that has an unspeakable name that's based on the version and public key token, that subdirectory contains the DLL.
If your assembly is a mixed-mode assembly created with C++/CLI then you'd start from either the GAC_32 or GAC_64 directory.