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Have questions about installing Gaussian 16 on Windows? Drop a comment below or contact Gaussian technical support (support@gaussian.com).

Let’s address the elephant in the room. Unlike open-source alternatives (like ORCA, NWChem, or Psi4), Gaussian is a proprietary, commercial software with strict licensing.

If you want to move forward with setting up your system, let me know:

. Below is a detailed guide on system requirements, downloading, and installing the software on a Windows environment. Gaussian.com 1. System Requirements & Compatibility

Most universities and research institutes hold site licenses. Check with your department's IT administrator to access the campus software portal or shared network drives. download+gaussian+16+windows+new

Are you setting up jobs for or larger complexes?

: Unauthorized installers often contain malware or backdoors.

Set the job type to Optimization using a basic method like B3LYP and basis set 6-31G(d) . Click Submit .

Go to the menu bar and select > Gaussian Calculation Setup . In the Job Type tab, choose Optimization . Have questions about installing Gaussian 16 on Windows

High-performance multi-core processor (Intel Core i7/i9 or AMD Ryzen 7/9 recommended).

Click Install and wait for the files to copy to your local drive. Step 4: Configure Scratch Directories

Copy your gaussian.lic (sent via email upon purchase) into C:\G16\ .

: Use the %Mem Link 0 command in your input files to utilize your available RAM effectively. Gaussian

If prompted by Windows User Account Control (UAC), click . Step 3: Follow the Installation Wizard Welcome Screen: Click Next to begin.

These alternatives are powerful, actively developed, and can be a great starting point for computational chemistry.

: At least 1.5–1.7 GB of disk space for the program, plus additional space for scratch files. Licensing and Pricing Gaussian 16

Click in the System Properties window.

To download and install Gaussian 16 on Windows, follow these steps: