This article contains links to the redistributable installation packages for Intel® C++ and Fortran Compilers for Windows*.
If you are looking for other versions, please go to Redistributable Libraries by Version.
The redistributable packages are for the end users who use applications that are built with Intel Compilers. Please note that there is one redistributable package for every compiler update. Make sure you download and install the one recommended by the application vendor.
OS requirement for redistributable packages
Please read the Release Notes of the update for supported OS distributions:
- Intel® C++ Compiler 19.1 for Windows*, PSXE 2020 Release Notes
- Intel® Fortran Compiler 19.1 for Windows*, PSXE 2020 Release Notes
There are links further down on this page to download the C++ and/or Fortran redistributable packages in .zip format. Download to a temporary directory. Unzip the .zip package. This creates a folder with 32bit (_ia32_) and 64bit (_intel64_) ‘.msi’ installation programs. The ‘.msi’ redistributable packages can be executed to install the redistributable libraries. To install the redistributable package on Windows, double-click the .msi installer file(s). The installation program of the redistributable package will guide you through the installation. You will need to accept the EULA and the installation will install all the libraries to the fixed directory: [Common Files]\Intel\Shared Libraries\
The installation creates a new env-var "INTEL_DEV_REDIST" with the value of above installation directory, and the PATH env-var is updated with [INTEL_DEV_REDIST]\redist\[ia32|intel64]\compiler and [INTEL_DEV_REDIST]\redist\[ia32|intel64]\mpirt (for Fortran packages). The "redist\intel64" directory is added only on 64-bit systems. See below for more information on PATH changes.
Additionally on 64-bit systems there is another subfolder [INTEL_DEV_REDIST]\compiler\lib\mic with redistributable libraries for Intel® Many Integrated Core Architecture(Intel MIC) architecture. And an environment variable MIC_LD_LIBRARY_PATH is set to this location.
If you wish to install the redistributable package "silently", so that no output is presented to the user, run the executable with the following options added to the command line like:
>> www_icl_redist_[ia32 | intel64]_2020.4.311.msi /quiet /qn or >> www_ifort_redist_[ia32 | intel64]_2020.4.311.msi /quiet /qn
System PATH Environment Variable Changes
Installation of the redistributable libraries, in either MSI or MSM form, adds folders containing the installed DLLs to the system PATH environment variable. Microsoft Windows has a limit on the total size of the value of PATH; in versions later than Windows 7 the limit is 4095 characters. This limit applies not only to the system-wide definition, but the length as modified by any batch files or scripts run. If the length is exceeded, the value of PATH can be truncated and this can cause WIndows or some applications to operate improperly.
If you are concerned that PATH may get truncated, you can prevent the redistributable installer from modifying PATH, but then it is your responsibility to make sure that the proper folders are named in PATH when programs built using the Intel compilers are executed.
If you are using the MSI installer, use the command line and add the parameter NO_UPDATE_PATH=yes. This example is for intel64. For 32bit change “intel64” to “ia32” below::
msiexec /I ww_icl_redist_intel64_2020.4.311.msi NO_UPDATE_PATH=yes
msiexec /I ww_ifort_redist_intel64_2020.4.311.msi NO_UPDATE_PATH=yes
If you are using the MSM merge module, set the update property NO_UPDATE_PATH=yes in the installer properties.
Testing your Installation:
After installation of the Intel redistributable libraries AND the prerequisite Microsoft Visual C++ redistributables or Visual Studio with C++ tools and libraries, try to run your Intel-compiled binary. If there are any issues, please try to determine the missing DLLs or libraries using a tool such as Dependency Walker.
Links to the redistributable packages
|Intel® C++ Compiler 19.1 for Windows*||Intel® Fortran Compiler 19.1 for Windows*|
Redistributable library package
Redistributable library package
- Redistributable Libraries by Version
- Redistribution of Application Binaries Built for Microsoft* Windows
Please consult the Intel User Forums:
Product and Performance Information
Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.