$AC file icon

$AC File Extension

Autodesk AutoCAD Autosave
  • Developer
    Autodesk, Inc.
  • Category
  • Popularity
    4.1 (22 votes)

What is $AC file?

$AC filename suffix is mostly used for Autodesk AutoCAD Autosave files. Autodesk, Inc. defined the Autodesk AutoCAD Autosave format standard. $AC file format is compatible with software that can be installed on Windows system platform. $AC file belongs to the 3D Image Files category just like 622 other filename extensions listed in our database. The software recommended for managing $AC files is AutoCAD. AutoCAD software was developed by Autodesk, Inc., and on its official website you may find more information about $AC files or the AutoCAD software program.

Programs which support $AC file extension

Programs that can handle $AC files are as follows. Files with $AC suffix can be copied to any mobile device or system platform, but it may not be possible to open them properly on target system.

Programs that support $AC file

Windows Windows

How to open file with $AC extension?

Problems with accessing $AC may be due to various reasons. On the bright side, the most encountered issues pertaining to Autodesk AutoCAD Autosave 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. Install AutoCAD software

Install software to open $AC file The most common reason for such problems is the lack of proper applications that supports $AC files installed on the system. The solution is straightforward, just download and install AutoCAD. The full list of programs grouped by operating systems can be found above. 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

Update software that support file extension $ACIf you already have AutoCAD installed on your systems and $AC files are still not opened properly, check if you have the latest version of the software. It may also happen that software creators by updating their applications add compatibility with other, newer file formats. If you have an older version of AutoCAD installed, it may not support $AC 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 AutoCAD.

Step 3. Associate Autodesk AutoCAD Autosave files with AutoCAD

After installing AutoCAD (the most recent version) make sure that it is set as the default application to open $AC files. The method is quite simple and varies little across operating systems.

Associate software with $AC file on Windows

The procedure to change the default program in Windows

  • Clicking the $AC 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 $AC files and clicking OK.
Associate software with $AC file on Mac

The procedure to change the default program in Mac OS

  • From the drop-down menu, accessed by clicking the file with $AC 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....
  • A message window should appear informing that This change will be applied to all files with $AC extension. By clicking Continue you confirm your selection.

Step 4. Ensure that the $AC 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 $AC file. Problems with opening the file may arise due to various reasons.

Check $AC file for viruses
1. Check the $AC file for viruses or malware

If the $AC is indeed infected, it is possible that the malware is blocking it from opening. Scan the $AC file as well as your computer for malware or viruses. $AC file is infected with malware? Follow the steps suggested by your antivirus software.

2. Verify that the $AC file’s structure is intact

Did you receive the $AC file in question from a different person? Ask him/her to send it one more time. The file might have been copied erroneously and the data lost integrity, which precludes from accessing the file. It could happen the the download process of file with $AC extension was interrupted and the file data is defective. Download the file again from the same source.

3. Ensure that you have appropriate access rights

There is a possibility that the file in question can only be accessed by users with sufficient system privileges. Log out of your current account and log in to an account with sufficient access privileges. Then open the Autodesk AutoCAD Autosave file.

4. Check whether your system can handle AutoCAD

If the systems has insufficient resources to open $AC files, try closing all currently running applications and try again.

5. Check if you have the latest updates to the operating system and drivers

Up-to-date system and drivers not only makes your computer more secure, but also may solve problems with Autodesk AutoCAD Autosave file. It is possible that one of the available system or driver updates may solve the problems with $AC files affecting older versions of given software.

Conversion of a $AC file

File Conversions from $AC extension to a different format
File conversions from other format to $AC file
Do you want to help?

If you have additional information about the $AC file, we will be grateful if you share it with our users. To do this, use the form here and send us your information on $AC file.

Top File Extensions
Show more
File Extension of the day
nds icon


Nintendo DS Game ROM

NDS (short for Nintendo Dual Screen) extension is used by Nintendo DS game ROM files. Single NDS file stores ROM Flash Data image obtained from o...