C01 File Extension

C01 file icon

WinAce Split Archive Part 1 Format

What is a C01 file?

The C01 file extension is linked to WinAce Split Archive Part 1 Format and belongs to the Compressed Files category, which includes 820 files.

e-merge GmbH, the developer of the WinAce Split Archive Part 1 Format (C01), has released file format and 2 programs designed to handle them.

C01 files are supported by Windows and Mac OS. There are 5 programs available to extract a C01 file, including popular tools like WinACE Archiver, 7-zip and WinRAR.

MIME types

  • application/x-ace-compressed

Programs that support C01 files

How to open a C01 file?

If you are having trouble opening a C01 file, it usually means the right software is not installed. Choose a program from the list that matches your operating system. Next, visit the official website of the developer, download the software, and install it on your device.

The most popular programs for working with C01 files are WinACE Archiver, 7-zip and WinRAR. To install the current version of WinACE Archiver, go directly to the official e-merge GmbH website. The universal package for all operating systems is available there.

After setup, the operating system should recognize C01 files and link them with WinACE Archiver.

Setting WinACE Archiver as default C01 viewer

Changing the default program in Windows

  1. Right-click on your C01 file and choose the "Open With" option. Then click "Choose another app" to continue the process;
  2. Choose WinACE Archiver from the available applications listed in the pop-up window to set it as the default application to open your C01 file;
  3. Be sure to check the "Always use this app" checkbox, and then click "OK" to confirm your selection.

Change the default app for a file type in Mac

  1. Initiate a right click or use Control + left click on the desired C01 file to open a menu where you can select various actions;
  2. Select "Open in application" and click "Other";
  3. Scroll down to the bottom of the window, and there you will find the "Enable" menu. The default selection is "Recommended Programs";
  4. Choose "All Programs" within this menu and locate WinACE Archiver. Check the box next to "Always open in app" to set it as the default program.

How to edit a C01 file?

To edit C01 files, you need to install specialized software that allows you not only to open but also to modify compressed files. Online C01 editors usually provide fewer features than software created specifically for WinAce Split Archive Part 1 Format.

Best C01 editors in 2026

Based on your described criteria, here is a list of available C01 editors.

C01 Editor SoftwareDeveloperPlatformsOverall Rating
WinACE Archivere-merge GmbHWindows4.2 out of 5 (41 review)

Tips and tricks to solve problems with C01 files

C01 files can sometimes be tricky, but minor software adjustments usually resolve the issues. Refer to the tips below for guidance.

Are there any symptoms that my C01 file is damaged?

Corrupted C01 compressed files may have one or more of the following symptoms:

  • File hangs or crashes in WinACE Archiver or other programs;
  • Error dialogs are displayed when interacting with the file;
  • The file does not open or opens with errors;
  • Unexplained increase in C01 file size;
  • Poor performance when editing a file in WinACE Archiver;

Why does WinACE Archiver crash or shut down frequently?

The absence of software updates can cause WinACE Archiver to crash. It is recommended to install the latest available updates for e-merge GmbH products.

Restarting your computer is an essential troubleshooting step that can resolve many common problems. It is recommended to restart your computer before making any changes to the software settings.

Is there any specific software or utility that can help repair a damaged C01 file?

Start a data recovery program and open the damaged C01 file. Go to the menu and select the "Repair" option to repair the file. Then wait for the recovery process to complete, which allows you to automatically repair corrupted compressed files.