What's the FCHK File?

By:   |   Last Updated: November 26, 2018

Microsoft Silver

FCHK File Summary

File Extension FCHK has only one distinct file type (Gaussian Checkpoint format) and is mostly associated with a single related software program from Gaussian, Inc. (Gaussian). FCHK files are traditionally categorized as Data Files.

File Extension FCHK files have been identified on both desktop and mobile devices. They are fully or partially supported by Windows, Mac, and Linux. The Popularity Rating for FCHK files is "Low", which means these files are not ordinarily found on an everyday user's device.

Although there is a lot more to know about FCHK files, those are the most important details of these types of files. If you are having trouble opening these files, or would like more detailed information, please see our comprehensive information below.

Low
Popular
2172
Order

/ 11690

Active

File Status

26

November

2018

Page Last Updated

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Varieties of FCHK Files


Chief FCHK Description

.FCHK
File ID:.fchk
Classification:Gaussian Checkpoint

The FCHK file extension is related to Gaussian.The FCHK file contains saved checkpoint file that is created when a job operation is finished successfully.Gaussian is a program that provides state-of-the-art capabilities for electronic structure modeling capabilities.

Organization: Gaussian, Inc.
Kind:Data Files
Location: HKEY_CLASSES_ROOT\.fchk

Software Programs That Open The Gaussian Checkpoint:


Gaussian by Gaussian, Inc.

Windows
Mac
Linux
Unix

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FCHK Demand


File Extension Device Breakdown (desktop / mobile / tablet)

Desktop (84.34%)
Mobile (14.29%)
Tablet (1.37%)


Troubleshoot FCHK Files


Typical FCHK Opening Challenges

Gaussian Not Present

You attempt to load your FCHK file and get an error such as "%%os%% Can't Open The FCHK File Extension". Usually, this is because you do not have Gaussian for %%os%% installed. This will prevent you from double-clicking to open the FCHK file because the OS doesn’t know how to handle it.


Tip: If you don't have Gaussian installed, and you know of another program to open your FCHK file, you can try opening it by selecting from the programs listed under "Show Apps".


Obsolete Version of Gaussian

Sometimes your installed version of Gaussian won't support your Gaussian Checkpoint file. If you do not have the proper version Gaussian (or any of the other programs listed above), you may need to try downloading a different version of it, or one of the other software applications listed above. This problem is most common when you have an older version of the software application, and your file was created by a newer version that it cannot recognize.


Tip: Investigate your FCHK file by right-clicking and selecting "Properties" to find clues on what version you need.


Regardless, most of the FCHK file opening problems relate to not having the right version of Gaussian installed.


Other Causes of FCHK File Opening Problems

Assuming you have the right Gaussian version installed, other problems can prevent you from opening FCHK files. If you're still experiencing problems opening FCHK files, there could be other computer problems. Additional factors include:

  • Corrupt Windows Registry file path references for FCHK
  • Corruption of the FCHK file description inside the Registry
  • Corrupt install of Gaussian or other FCHK-related program
  • FCHK file corruption
  • Past or present virus infection has affected your FCHK
  • Drivers associated with FCHK software need to be updated
  • Your computer does not have the adequate system resources to open the Gaussian Checkpoint format

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