DT1 File Extension

What is DT1 file?

DT1 filename suffix is mostly used for DTED Level 1 Format files. DTED Level 1 Format specification was created by National Geospatial-Intelligence Agency. DT1 files are supported by software applications available for devices running Linux, Windows. DT1 file format, along with 255 other file formats, belongs to the GIS Files category. The most popular program for handling DT1 files is FME Desktop, but users can choose among 3 different programs that support this file format. On the official website of Safe Software Inc. developer not only will you find detailed information about theFME Desktop software, but also about DT1 and other supported file formats.

Programs which support DT1 file extension

The following list contains programs grouped by 2 operating systems that support DT1 files. Files with DT1 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 DT1 extension?

Being unable to open files with DT1 extension can be have various origins. Fortunately, most common problems with DT1 files can be solved without in-depth IT knowledge, and most importantly, in a matter of minutes. The list below will guide you through the process of addressing the encountered problem.

Step 1. Download and install FME Desktop

The most common reason for such problems is the lack of proper applications that supports DT1 files installed on the system. This issue can be addressed by downloading and installing FME Desktop or different compatible program, such as ArcGIS Desktop, MapInfo. On the top of the page a list that contains all programs grouped based on operating systems supported can be found. If you want to download FME Desktop installer in the most secured manner, we suggest you visit Safe Software Inc. website and download from their official repositories.

Step 2. Update FME Desktop to the latest version

You still cannot access DT1 files although FME Desktop is installed on your system? Make sure that the software is up to date. Software developers may implement support for more modern file formats in updated versions of their products. If you have an older version of FME Desktop installed, it may not support DT1 format. The most recent version of FME Desktop is backward compatible and can handle file formats supported by older versions of the software.

Step 3. Associate DTED Level 1 Format files with FME Desktop

If the issue has not been solved in the previous step, you should associate DT1 files with latest version of FME Desktop you have installed on your device. The method is quite simple and varies little across operating systems.

The procedure to change the default program in Windows

• Choose the Open with entry from the file menu accessed by right-mouse clicking on the DT1 file
• Select Choose another app → More apps
• Finally select Look for another app on this PC, point to the folder where FME Desktop is installed, check the Always use this app to open DT1 files box and conform your selection by clicking OK button

The procedure to change the default program in Mac OS

• From the drop-down menu, accessed by clicking the file with DT1 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....
• If you followed the previous steps a message should appear: This change will be applied to all files with DT1 extension. Next, click the Continue button to finalize the process.

Step 4. Ensure that the DT1 file is complete and free of errors

You closely followed the steps listed in points 1-3, but the problem is still present? You should check whether the file is a proper DT1 file. Problems with opening the file may arise due to various reasons.

1. Verify that the DT1 in question is not infected with a computer virus

Should it happed that the DT1 is infected with a virus, this may be that cause that prevents you from accessing it. Scan the DT1 file as well as your computer for malware or viruses. If the scanner detected that the DT1 file is unsafe, proceed as instructed by the antivirus program to neutralize the threat.

2. Ensure the file with DT1 extension is complete and error-free

Did you receive the DT1 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. When downloading the file with DT1 extension from the internet an error may occurred resulting in incomplete file. Try downloading the file again.

3. Verify whether your account has administrative rights

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 DTED Level 1 Format file.

4. Check whether your system can handle FME Desktop

If the system is under havy load, it may not be able to handle the program that you use to open files with DT1 extension. In this case close the other applications.

5. Ensure that you have the latest drivers and system updates and patches installed

Up-to-date system and drivers not only makes your computer more secure, but also may solve problems with DTED Level 1 Format file. Outdated drivers or software may have caused the inability to use a peripheral device needed to handle DT1 files.

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