Hi vikasha enterprises,
This request stems from a misunderstanding of how the .NET Framework architecture operates. You cannot download the Global Assembly Cache (GAC) itself, as it is a machine-wide directory structure located at %windir%\assembly (and %windir%\Microsoft.NET\assembly for newer .NET versions) inherent to the Windows operating system, used to store shared versioned assemblies.
The version number you provided, 7.0.3300.0, is the specific signature of the Microsoft.StdFormat Primary Interop Assembly (PIA). This is a legacy component associated with Visual Studio .NET 2003 and is often required for data binding and formatting in older applications that bridge .NET and Visual Basic 6.0 technologies. If you are receiving an error stating that this version is missing, it means the application you are trying to run failed to register its specific dependencies during installation, or it is a legacy application incompatible with the default libraries present in your current Windows Insider build.
To resolve this, you generally do not download this file in isolation due to "DLL Hell" and security risks. Instead, you must locate the original installation media for the software you are trying to run and attempt a "Repair" or "Reinstall" with administrative privileges (Run as Administrator), as the installer should contain the manifest to place Microsoft.StdFormat.dll into the GAC. If you are the developer or the software vendor is unavailable, you may need to look for the Visual Basic 6.0 Common Controls redistributable or the Visual Studio .NET 2003 runtime components, though these are deprecated. Please provide the exact error message and the name of the application failing to launch so I can direct you to the specific redistribution package or registry fix required for that software.
I hope you've found something useful here. If it helps you get more insight into the issue, it's appreciated to accept the answer. Should you have more questions, feel free to leave a message. Have a nice day!
VP