Microsoft Visual C 2008 Sp1 Redistributable Package X64 Updated May 2026

Many users download an old, original SP1 package from a third-party site. That version is vulnerable to known exploits (e.g., CVE-2010-3220, a remote code execution flaw). The updated package is the secure, modern version that works correctly on Windows 8, Windows 10, and Windows 11 without triggering compatibility warnings.

The official “updated” x64 redistributable for VC++ 2008 SP1 is version 9.0.30729.6161. Earlier versions (like 9.0.21022 or 9.0.30729.1) are outdated.

If you have a modern gaming PC, you might wonder: Why can’t applications just use Visual C++ 2015-2022 Redistributable?

The answer lies in ABI (Application Binary Interface) compatibility. A program compiled with Visual Studio 2008 expects runtime DLLs with specific function signatures, name mangling, and memory layouts. Newer runtimes (2015+) are not backward-compatible with 2008. Many users download an old, original SP1 package

Here are real-world examples of software that still require the VC++ 2008 SP1 x64 (updated) package:

Professional Software:

Hardware Drivers:

Without this specific x64 redistributable, these applications will crash on launch with errors like:

“The program can’t start because MSVCR90.dll is missing from your computer.” “Error 0xc000007b” (often a mix of x86/x64 mismatch) “Side-by-side configuration is incorrect.” If you have a modern gaming PC, you

While Windows can handle multiple side-by-side versions (e.g., 2005, 2008, 2010, 2012…), installing an older copy over a newer one can break things. Always aim for the latest service pack + security update of the 2008 x64 redistributable.

For most users today:
If you run modern Windows 10 or 11, the system likely already includes the updated version via cumulative updates. Only reinstall it if a legacy program explicitly complains.

Check presence of versioned assemblies in WinSxS (e.g., folders containing "x86_microsoft.vc90.crt" or "amd64_microsoft.vc90.crt") and specific DLL file versions.

Open Control Panel → Programs and Features. Look for any entry named “Microsoft Visual C++ 2008 Redistributable – x64”. Uninstall all of them. Reboot. Professional Software:

Always download from official Microsoft sources. The final updated version (KB973924) includes security and reliability fixes.

⚠️ Avoid third-party "DLL download" sites. They often distribute outdated or malicious files.

| Specification | Detail | |---------------|--------| | Full Name | Microsoft Visual C++ 2008 Service Pack 1 Redistributable Package (x64) | | Version | 9.0.30729.6161 (latest SP1 update) | | Architecture | x86-64 (64-bit) | | Purpose | Run 64-bit apps built with VS2008 SP1 | | Supported OS | Windows XP SP2 and later (including Windows 10/11) |

Note: Do not confuse this with the x86 (32-bit) version. A 64-bit Windows system may require both x86 and x64 redistributables, as 32-bit applications need the x86 runtime.

Installs runtime components of Visual C++ Libraries required to run 64-bit applications built with Visual C++ 2008 SP1.