AC$ File Extension
AutoCAD Temporary Format
- File Type ac$
- Developer Autodesk
- Popularity
- Application AutoCAD
- Category 3D Image Files
What is a AC$ file?
The AC$ file extension is linked to AutoCAD Temporary Format and belongs to the 3D Image Files category, which includes 618 files.
The AutoCAD Temporary Format (AC$) was developed by Autodesk, which created file format and 45 programs to work with them.
AC$ files are compatible with various operating systems, including Windows and Mac OS. To create a AC$ file, you can choose from 2 programs such as AutoCAD and AutoCAD AutoSpool.
How to open a AC$ file?
If you cannot open a AC$ 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.
AutoCAD and AutoCAD AutoSpool are recognized as the most popular software solutions for dealing with AC$ files. To set up the newest version of AutoCAD on your device, simply go to the official Autodesk website. There you can download the edition compatible with every operating system.
Once installed, AutoCAD will be set as the default program, and AC$ files will open automatically.
Set AutoCAD to open AC$ by default
Setting a default program by file type in Windows
- Right click on your AC$ file, then select "Open with" and click "Choose another application";
- Find the AutoCAD application in the pop-up window and select it as your preferred program;
- Select the "Always use this application" check box and click "OK" to save your selection as the default application for opening AC$ files.
Change default apps on Mac
- Right-click or use Control + Left-click on the desired AC$ file to access the file’s context menu;
- Select "Open in application" and click "Other";
- At the bottom of the window, find the "Enable" menu, where "Recommended Programs" is already selected by default;
- Within this menu, select "All Programs" and then locate AutoCAD. Check the box next to "Always open in app" to set it as the default program.
How to edit a AC$ file?
Editing AC$ files requires installing professional software that lets you open and edit 3d image files. Online editors have more limitations compared to dedicated AutoCAD Temporary Format programs.
Best AC$ editors in 2026
Considering the mentioned criteria, we have compiled a list of AC$ editors that may suit your needs.
| AC$ Editor Software | Developer | Platforms | Overall Rating |
|---|---|---|---|
| AutoCAD | Autodesk | Windows, Mac OS | 4.4 out of 5 (37 reviews) |
| AutoCAD AutoSpool | Autodesk | Windows | 4.2 out of 5 (38 reviews) |
Easy AC$ Troubleshooting
Certain problems with AC$ files can be conveniently fixed with small software tweaks. Here are some helpful tips to address them.
What are the steps to repair a damaged AC$ file?
Open the corrupted AC$ file in a recovery program and select the "Repair" menu item. Please be patient while the recovery process completes, which will automatically restore the damaged 3d image files.
How do I know if my AC$ file is corrupted?
Corrupted AC$ 3d image files may show the following signs:
- Attempts to open the file result in errors or failed results;
- Editing the archive in AutoCAD is accompanied by slow performance or delays;
- The file causes AutoCAD or other programs to hang or crash during operation;
- Unexplained increase in AC$ file size;
- Error messages appear while working with the file;
What are the reasons behind AutoCAD crash?
The likely cause of AutoCAD crashing is lack of software updates. Install the latest updates available for Autodesk products.
Restarting your computer is often an effective solution to resolve various common problems. Therefore, it is recommended to do so before making any changes to the software configuration.