Microsoft VC++ Redistributable Error 0x80070661

When you run the Microsoft Visual C++ redistributable setup, the error code 0x80070661 may occur:

Microsoft Visual C++ 2022 Redistributable (Arm64)

Setup Failed

One or more issues caused the setup to fail. Please fix the issues and then retry setup. For more informatin see the log file.

0x80070661 - This installation package is not supported by this processor type. Contact your product vendor.

The dd_vcredist_amd64_<date_time>.log in your %temp% folder contains the following entries:

[2070:2A50][2023-08-06T17:31:12]e000: Error 0x80070661: Failed to install MSI package.
[2070:2A50][2023-08-06T17:31:12]e000: Error 0x80070661: Failed to execute MSI package.
[339C:173C][2023-08-06T17:31:12]e000: Error 0x80070661: Failed to configure per-machine MSI package.
[339C:173C][2023-08-06T17:31:12]i319: Applied execute package: vcRuntime_arm64, result: 0x80070661, restart: None
[339C:173C][2023-08-06T17:31:12]e000: Error 0x80070661: Failed to execute MSI package.

Cause

The above error occurs if you run the ARM64 version of the VC++ redistributable setup on an x64 or an x86 computer. The error code 0x80070661 means the following:

ERROR_INSTALL_PLATFORM_UNSUPPORTED winerror.h
# This installation package is not supported by this
# processor type. Contact your product vendor.

You can run MSINFO32.exe to check your processor architecture. The CPU type will be reported as the computer’s System Type. ARM processors may appear as ARM-based PC or ARM64-based PC. Windows Arm-based PCs FAQ – Microsoft Support

The above error denotes that you’re not using an ARM-based device.

Resolution

To resolve the issue, install the x64 or x86 version (depending upon the version your program requires) of the VC++ redistributable if you’re using Windows 64-bit.

• How to check your OS bitness

If a 64-bit program on your computer requires the VC++ runtime, install the 64-bit version.

• Latest supported Visual C++ Redistributable downloads | Microsoft Learn
• VC++ Redist for Visual Studio 2015 – 2019 (List of Files) » Winhelponline

If you’re using Windows 32-bit, download the VC++ x86 redist installer.