477 File Extension

What is 477 file?

477 is a file extension commonly associated with MNS Shape Definition Companion Format files. MNS Shape Definition Companion Format format was developed by Sapper Oy. 477 files are supported by software applications available for devices running Windows. 477 file belongs to the GIS Files category just like 255 other filename extensions listed in our database. The most popular software that supports 477 files is Master Navigator.

Programs which support 477 file extension

The following listing features 477-compatible programs. Files with 477 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 477 extension?

Problems with accessing 477 may be due to various reasons. On the bright side, the most encountered issues pertaining to MNS Shape Definition Companion Format files aren’t complex. In most cases they can be addressed swiftly and effectively without assistance from a specialist. We have prepared a listing of which will help you resolve your problems with 477 files.

Step 1. Get the Master Navigator

The most common reason for such problems is the lack of proper applications that supports 477 files installed on the system. The solution is straightforward, just download and install Master Navigator. 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 Master Navigator installed is by going to developer’s website () and downloading the software using provided links.

Step 2. Verify the you have the latest version of Master Navigator

You still cannot access 477 files although Master Navigator is installed on your system? Make sure that the software is up to date. Sometimes software developers introduce new formats in place of that already supports along with newer versions of their applications. This can be one of the causes why 477 files are not compatible with Master Navigator. All of the file formats that were handled just fine by the previous versions of given program should be also possible to open using Master Navigator.

Step 3. Assign Master Navigator to 477 files

After installing Master Navigator (the most recent version) make sure that it is set as the default application to open 477 files. The next step should pose no problems. The procedure is straightforward and largely system-independent

Change the default application in Windows

• Right-click the 477 file and choose Open with option
• Select Choose another app → More apps
• The last step is to select Look for another app on this PC option supply the directory path to the folder where Master Navigator is installed. Now all that is left is to confirm your choice by selecting Always use this app to open 477 files and clicking OK.

Change the default application in Mac OS

• From the drop-down menu, accessed by clicking the file with 477 extension, select Information
• Find the Open with option – click the title if its hidden
• 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 477 extension message should pop-up. Click Continue button in order to confirm your choice.

Step 4. Check the 477 for errors

If you followed the instructions form the previous steps yet the issue is still not solved, you should verify the 477 file in question. It is probable that the file is corrupted and thus cannot be accessed.

1. The 477 may be infected with malware – make sure to scan it with an antivirus tool.

Should it happed that the 477 is infected with a virus, this may be that cause that prevents you from accessing it. It is advised to scan the system for viruses and malware as soon as possible or use an online antivirus scanner. If the scanner detected that the 477 file is unsafe, proceed as instructed by the antivirus program to neutralize the threat.

2. Ensure the file with 477 extension is complete and error-free

Did you receive the 477 file in question from a different person? Ask him/her to send it one more time. 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. It could happen the the download process of file with 477 extension was interrupted and the file data is defective. Download the file again from the same source.

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 in using an administrative account and see If this solves the problem.

4. Check whether your system can handle Master Navigator

If the system is under havy load, it may not be able to handle the program that you use to open files with 477 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 MNS Shape Definition Companion Format files and ensure security of your device and operating system. It is possible that one of the available system or driver updates may solve the problems with 477 files affecting older versions of given software.

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