HOI4 File Extension

What is HOI4 file?

Full format name of files that use HOI4 extension is Hearts Of Iron IV Saved Game Format. HOI4 file format is compatible with software that can be installed on Windows system platform. Files with HOI4 extension are categorized as Game Files files. The Game Files subset comprises 1509 various file formats. The most popular software that supports HOI4 files is Hearts of Iron IV. Hearts of Iron IV software was developed by Paradox Interactive, and on its official website you may find more information about HOI4 files or the Hearts of Iron IV software program.

Programs which support HOI4 file extension

The following listing features HOI4-compatible programs. Files with HOI4 suffix can be copied to any mobile device or system platform, but it may not be possible to open them properly on target system.

Updated: 01/12/2022

How to open file with HOI4 extension?

Being unable to open files with HOI4 extension can be have various origins. Fortunately, most common problems with HOI4 files can be solved without in-depth IT knowledge, and most importantly, in a matter of minutes. The following is a list of guidelines that will help you identify and solve file-related problems.

Step 1. Get the Hearts of Iron IV

The most common reason for such problems is the lack of proper applications that supports HOI4 files installed on the system. The solution is straightforward, just download and install Hearts of Iron IV. Above you will find a complete listing of programs that support HOI4 files, classified according to system platforms for which they are available. If you want to download Hearts of Iron IV installer in the most secured manner, we suggest you visit Paradox Interactive website and download from their official repositories.

Step 2. Check the version of Hearts of Iron IV and update if needed

If the problems with opening HOI4 files still occur even after installing Hearts of Iron IV, it is possible that you have an outdated version of the software. Check the developer’s website whether a newer version of Hearts of Iron IV is available. Software developers may implement support for more modern file formats in updated versions of their products. If you have an older version of Hearts of Iron IV installed, it may not support HOI4 format. All of the file formats that were handled just fine by the previous versions of given program should be also possible to open using Hearts of Iron IV.

Step 3. Assign Hearts of Iron IV to HOI4 files

If you have the latest version of Hearts of Iron IV installed and the problem persists, select it as the default program to be used to manage HOI4 on your device. The next step should pose no problems. The procedure is straightforward and largely system-independent

Selecting the first-choice application in Windows

• Right-click the HOI4 file and choose Open with option
• Select Choose another app → More apps
• Finally select Look for another app on this PC, point to the folder where Hearts of Iron IV is installed, check the Always use this app to open HOI4 files box and conform your selection by clicking OK button

Selecting the first-choice application in Mac OS

• From the drop-down menu, accessed by clicking the file with HOI4 extension, select 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....
• Finally, a This change will be applied to all files with HOI4 extension message should pop-up. Click Continue button in order to confirm your choice.

Step 4. Check the HOI4 for errors

Should the problem still occur after following steps 1-3, check if the HOI4 file is valid. It is probable that the file is corrupted and thus cannot be accessed.

1. Verify that the HOI4 in question is not infected with a computer virus

If the HOI4 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. If the HOI4 file is indeed infected follow the instructions below.

2. Verify that the HOI4 file’s structure is intact

If you obtained the problematic HOI4 file from a third party, ask them to supply you with another copy. It is possible that the file has not been properly copied to a data storage and is incomplete and therefore cannot be opened. It could happen the the download process of file with HOI4 extension was interrupted and the file data is defective. Download the file again from the same source.

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

Some files require elevated access rights to open them. Log out of your current account and log in to an account with sufficient access privileges. Then open the Hearts Of Iron IV Saved Game Format file.

4. Check whether your system can handle Hearts of Iron IV

The operating systems may note enough free resources to run the application that support HOI4 files. Close all running programs and try opening the HOI4 file.

5. Verify that your operating system and drivers are up to date

Up-to-date system and drivers not only makes your computer more secure, but also may solve problems with Hearts Of Iron IV Saved Game Format file. Outdated drivers or software may have caused the inability to use a peripheral device needed to handle HOI4 files.

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