DT1 File Extension
DTED Level 1 Format
What is a DT1 file?
Files with the DT1 extension are specifically tied to DTED Level 1 Format, a GIS Files type, and there are 247 files in this category.
DT1 file support extends to various operating systems, including Windows. To view a DT1 file, you can choose from 2 programs such as ArcGIS and Global Mapper.
How to open a DT1 file?
If you cannot open a DT1 file, it is most often due to missing software. Select a program from the list according to your operating system. Then go to the official website of the program developer, download it, and install it on your device.
Thanks to their popularity, ArcGIS and Global Mapper are often the go-to programs for managing DT1 files. If you need the newest version of ArcGIS, just access the Esri website. From there you can download the installer compatible with all systems.
Once ArcGIS is installed, the OS should configure it as the default tool for opening DT1 files.
Make ArcGIS the default DT1 viewer
Change the default app to open files on Mac
- Right click or use Control + Left Click on the desired DT1 file to access a dropdown menu of actions;
- Choose "Open in Application" and click "Other";
- Towards the bottom of the window, find the "Enable" menu, which is already set to the default option, "Recommended Programs";
- In this menu, select "All Programs" and search for ArcGIS. Check the box next to "Always open in app" to make it the default option.
Change a default app in Windows
- Start by right-clicking on your DT1 file, then select the "Open with" option and choose "Choose another app" from the menu that appears;
- Inside the popup window, scroll through the list of applications and specifically choose ArcGIS as the application to associate with your DT1 file;
- Check the "Always use this app" checkbox and click "OK".
Finding answers to DT1 file problems
If DT1 files are giving you trouble, small modifications to your software can help. Check out the troubleshooting tips below to fix these issues.
What can lead to sudden ArcGIS crashes?
Insufficient updates for Esri products can cause ArcGIS to crash. Be sure to regularly install the latest software updates.
A computer restart is often the key to solving numerous common problems. That’s why, it is recommended to restart the computer before making any changes to the software settings.
What is the recommended approach to repair a damaged DT1 file?
Use a recovery program to open the damaged DT1 file, and in the menu, click "Repair" to start the repair operation. Wait for the recovery process to finish as it will automatically restore the damaged gis files.
What are the ways to check if my DT1 file is damaged?
Characteristics of corrupted DT1 gis files can include:
- The file encounters problems during the opening process or shows error indications;
- The file causes ArcGIS or other software to hang or crash during various operations;
- An unexplained increase in the size of the DT1 file;
- Actions performed on the file result in the appearance of error notifications;