MOP File Extension

What is MOP file?

MOP is a file extension commonly associated with MOPAC Input Format files. MOP file format is compatible with software that can be installed on Windows system platform. Files with MOP extension are categorized as Misc Files files. The Misc Files subset comprises 6033 various file formats. The most popular software that supports MOP files is MOPAC.

Programs which support MOP file extension

Below is a table that list programs that support MOP files. Files with MOP extension, just like any other file formats, can be found on any operating system. The files in question may be transferred to other devices, be it mobile or stationary, yet not all systems may be capable of properly handling such files.

How to open file with MOP extension?

Problems with accessing MOP may be due to various reasons. On the bright side, the most encountered issues pertaining to MOPAC Input Format files aren’t complex. In most cases they can be addressed swiftly and effectively without assistance from a specialist. The following is a list of guidelines that will help you identify and solve file-related problems.

Step 1. Get the MOPAC

Problems with opening and working with MOP files are most probably having to do with no proper software compatible with MOP files being present on your machine. The solution to this problem is very simple. Download MOPAC and install it on your device. On the top of the page a list that contains all programs grouped based on operating systems supported can be found. The safest method of downloading MOPAC installed is by going to developer’s website () and downloading the software using provided links.

Step 2. Check the version of MOPAC and update if needed

If the problems with opening MOP files still occur even after installing MOPAC, it is possible that you have an outdated version of the software. Check the developer’s website whether a newer version of MOPAC is available. Sometimes software developers introduce new formats in place of that already supports along with newer versions of their applications. If you have an older version of MOPAC installed, it may not support MOP format. The most recent version of MOPAC is backward compatible and can handle file formats supported by older versions of the software.

Step 3. Assign MOPAC to MOP files

After installing MOPAC (the most recent version) make sure that it is set as the default application to open MOP files. The process of associating file formats with default application may differ in details depending on platform, but the basic procedure is very similar.

Selecting the first-choice application in Windows

• Right-click the MOP file and choose Open with option
• Click Choose another app and then select More apps option
• Finally select Look for another app on this PC, point to the folder where MOPAC is installed, check the Always use this app to open MOP files box and conform your selection by clicking OK button

Selecting the first-choice application in Mac OS

• By clicking right mouse button on the selected MOP file open the file menu and choose Information
• Proceed to the Open with section. If its closed, click the title to access available options
• From the list choose the appropriate program and confirm by clicking Change for all....
• If you followed the previous steps a message should appear: This change will be applied to all files with MOP extension. Next, click the Continue button to finalize the process.

Step 4. Ensure that the MOP file is complete and free of errors

Should the problem still occur after following steps 1-3, check if the MOP file is valid. Being unable to access the file can be related to various issues.

1. Check the MOP file for viruses or malware

If the file is infected, the malware that resides in the MOP file hinders attempts to open it. Immediately scan the file using an antivirus tool or scan the whole system to ensure the whole system is safe. MOP file is infected with malware? Follow the steps suggested by your antivirus software.

2. Ensure the file with MOP extension is complete and error-free

If the MOP file was sent to you by someone else, ask this person to resend the file to you. It is possible that the file has not been properly copied to a data storage and is incomplete and therefore cannot be opened. If the MOP file has been downloaded from the internet only partially, try to redownload it.

3. Verify whether your account has administrative rights

There is a possibility that the file in question can only be accessed by users with sufficient system privileges. Log out of your current account and log in to an account with sufficient access privileges. Then open the MOPAC Input Format file.

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

If the system is under havy load, it may not be able to handle the program that you use to open files with MOP extension. In this case close the other applications.

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 MOPAC Input Format files and ensure security of your device and operating system. It may be the case that the MOP files work properly with updated software that addresses some system bugs.

Do you want to help?

If you have additional information about the MOP 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 MOP file.