Microsoft Visual C 2008 Sp1 Redistributable Package X64 Updated May 2026
Microsoft Visual C++ 2008 SP1 Redistributable Package (x64) — Updated
The original Visual C++ 2008 Redistributable (RTM) had several bugs and security vulnerabilities. Service Pack 1 and subsequent update KB973924 (July 2009) provided:
The "SP1 updated" version (9.0.30729.6161) is the final recommended release for all x64 systems. Microsoft no longer issues further updates for this runtime; support ended with the Visual Studio 2008 extended support lifecycle (April 2018).
You’ll need the updated x64 redistributable if: Microsoft Visual C++ 2008 SP1 Redistributable Package (x64)
Even if you have the x86 (32-bit) version installed, many 64-bit applications specifically require the x64 runtime.
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 Earlier versions (like 9.0.21022 or 9.0.30729.1) are outdated. The "SP1 updated" version (9
The most common headache users face when trying to install the Visual C++ 2008 SP1 x64 package on modern Windows is the dreaded Error 1935.
This happens because modern Windows versions treat the older 2008 runtime files with suspicion. The installer tries to write to the system assembly cache (the WinSxS folder), and if there is a conflict with a newer version or a permission issue, the install fails.
How to fix it:
Before diving into the 2008 SP1 x64 version specifically, let’s establish a baseline.
Microsoft Visual C++ is a powerful development environment (IDE) used by millions of developers to create Windows applications. When a developer writes a program in C++ using Visual Studio 2008, they rely on a set of standard libraries—called the C++ Runtime Libraries. These libraries handle memory management, input/output operations, string manipulation, and math functions.
Instead of forcing every application to bundle its own copy of these libraries (which would waste disk space and memory), Microsoft created the Redistributable Package. This package installs the runtime files once on your system, and any application that needs them can call upon them from a centralized location. Even if you have the x86 (32-bit) version
Analogy: Think of the redistributable like a public bus system. Instead of every passenger (application) building their own bus (runtime library), they all share the same public transport network installed by the city (Microsoft).
If you get an error like “Error 1935” or “Installation failed,” reboot into Safe Mode with Networking. In Safe Mode, Windows loads minimal drivers, which prevents other software from locking the runtime files during installation.
