FCHK File Extension

What is FCHK file?

FCHK filename suffix is mostly used for Gaussian Checkpoint files. Gaussian Checkpoint format was developed by Gaussian, Inc.. Files with FCHK extension may be used by programs distributed for Windows platform. FCHK file format, along with 6033 other file formats, belongs to the Misc Files category. Gaussian is by far the most used program for working with FCHK files. On the official website of Gaussian, Inc. developer not only will you find detailed information about theGaussian software, but also about FCHK and other supported file formats.

Programs which support FCHK file extension

Below is a table that list programs that support FCHK files. Files with FCHK suffix can be copied to any mobile device or system platform, but it may not be possible to open them properly on target system.

How to open file with FCHK extension?

Being unable to open files with FCHK extension can be have various origins. What is important, all common issues related to files with FCHK extension can be resolved by the users themselves. The process is quick and doesn’t involve an IT expert. The list below will guide you through the process of addressing the encountered problem.

Step 1. Download and install Gaussian

The most common reason for such problems is the lack of proper applications that supports FCHK files installed on the system. The solution is straightforward, just download and install Gaussian. On the top of the page a list that contains all programs grouped based on operating systems supported can be found. One of the most risk-free method of downloading software is using links provided by official distributors. Visit Gaussian website and download the installer.

Step 2. Verify the you have the latest version of Gaussian

You still cannot access FCHK files although Gaussian is installed on your system? Make sure that the software is up to date. It may also happen that software creators by updating their applications add compatibility with other, newer file formats. This can be one of the causes why FCHK files are not compatible with Gaussian. The most recent version of Gaussian is backward compatible and can handle file formats supported by older versions of the software.

Step 3. Assign Gaussian to FCHK files

After installing Gaussian (the most recent version) make sure that it is set as the default application to open FCHK files. The method is quite simple and varies little across operating systems.

Selecting the first-choice application in Windows

• Clicking the FCHK with right mouse button will bring a menu from which you should select the Open with option
• Click Choose another app and then select More apps option
• To finalize the process, select Look for another app on this PC entry and using the file explorer select the Gaussian installation folder. Confirm by checking Always use this app to open FCHK files box and clicking OK button.

Selecting the first-choice application in Mac OS

• From the drop-down menu, accessed by clicking the file with FCHK extension, select Information
• Open the Open with section by clicking its name
• Select the appropriate software and save your settings by clicking Change all
• If you followed the previous steps a message should appear: This change will be applied to all files with FCHK extension. Next, click the Continue button to finalize the process.

Step 4. Verify that the FCHK is not faulty

Should the problem still occur after following steps 1-3, check if the FCHK file is valid. It is probable that the file is corrupted and thus cannot be accessed.

1. The FCHK may be infected with malware – make sure to scan it with an antivirus tool.

If the FCHK is indeed infected, it is possible that the malware is blocking it from opening. It is advised to scan the system for viruses and malware as soon as possible or use an online antivirus scanner. FCHK file is infected with malware? Follow the steps suggested by your antivirus software.

2. Check whether the file is corrupted or damaged

If you obtained the problematic FCHK file from a third party, ask them to supply you with another copy. During the copy process of the file errors may occurred rendering the file incomplete or corrupted. This could be the source of encountered problems with the file. If the FCHK file has been downloaded from the internet only partially, try to redownload it.

3. Check if the user that you are logged as has administrative privileges.

Some files require elevated access rights to open them. Switch to an account that has required privileges and try opening the Gaussian Checkpoint file again.

4. Verify that your device fulfills the requirements to be able to open Gaussian

The operating systems may note enough free resources to run the application that support FCHK files. Close all running programs and try opening the FCHK file.

5. Check if you have the latest updates to the operating system and drivers

Latest versions of programs and drivers may help you solve problems with Gaussian Checkpoint files and ensure security of your device and operating system. It may be the case that the FCHK files work properly with updated software that addresses some system bugs.

Do you want to help?

If you have additional information about the FCHK file, we will be grateful if you share it with our users. To do this, use the form here and send us your information on FCHK file.