ATC File Extension

What is ATC file?

ATC is a settings file used by AutoCAD. ATC files store AutoCAD global settings that can be applied for different projects and workspaces. ATC files are automatically generated when new elements such as palettes are added.

Sharing configurations

ATC config files can be used to synchronize settings across different user accounts or workspaces. Settings in ATC files can be exported directly to new workspaces and then saved as XTP files, which can be applied on different computer. XTP files are only recognized by AutoCAD.

Programs which support ATC file extension

Below is a table that list programs that support ATC files. ATC files can be encountered on all system platforms, including mobile, yet there is no guarantee each will properly support such files.

Updated: 10/17/2022

How to open file with ATC extension?

There can be multiple causes why you have problems with opening ATC files on given system. On the bright side, the most encountered issues pertaining to AutoCAD Catalog 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. Download and install AutoCAD

The main and most frequent cause precluding users form opening ATC files is that no program that can handle ATC files is installed on user’s system. This one is an easy one. Select AutoCAD or one of the recommended programs (for example, AutoCAD Civil 3D, AutoCAD LT) and download it from appropriate source and install on your system. Above you will find a complete listing of programs that support ATC files, classified according to system platforms for which they are available. If you want to download AutoCAD installer in the most secured manner, we suggest you visit Autodesk, Inc. website and download from their official repositories.

Step 2. Update AutoCAD to the latest version

You still cannot access ATC files although AutoCAD 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 ATC files are not compatible with AutoCAD. The latest version of AutoCAD should support all file formats that where compatible with older versions of the software.

Step 3. Assign AutoCAD to ATC files

If the issue has not been solved in the previous step, you should associate ATC files with latest version of AutoCAD you have installed on your device. The next step should pose no problems. The procedure is straightforward and largely system-independent

Change the default application in Windows

• Clicking the ATC with right mouse button will bring a menu from which you should select the Open with option
• Click Choose another app and then select More apps option
• The last step is to select Look for another app on this PC option supply the directory path to the folder where AutoCAD is installed. Now all that is left is to confirm your choice by selecting Always use this app to open ATC files and clicking OK.

Change the default application in Mac OS

• Right-click the ATC file and select Information
• Proceed to the Open with section. If its closed, click the title to access available options
• Select the appropriate software and save your settings by clicking Change all
• If you followed the previous steps a message should appear: This change will be applied to all files with ATC extension. Next, click the Continue button to finalize the process.

Step 4. Check the ATC for errors

If you followed the instructions form the previous steps yet the issue is still not solved, you should verify the ATC file in question. Being unable to access the file can be related to various issues.

1. Check the ATC file for viruses or malware

If the ATC is indeed infected, it is possible that the malware is blocking it from opening. Immediately scan the file using an antivirus tool or scan the whole system to ensure the whole system is safe. If the ATC file is indeed infected follow the instructions below.

2. Check whether the file is corrupted or damaged

If you obtained the problematic ATC 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. When downloading the file with ATC extension from the internet an error may occurred resulting in incomplete file. Try downloading the file again.

3. Ensure that you have appropriate access rights

Sometimes in order to access files user need to have administrative privileges. Log out of your current account and log in to an account with sufficient access privileges. Then open the AutoCAD Catalog Format file.

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

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

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 AutoCAD Catalog Format file. Outdated drivers or software may have caused the inability to use a peripheral device needed to handle ATC files.

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