Y01 File Extension

Y01 file icon

Corel Paradox Secondary Index

What is a Y01 file?

Corel Paradox Secondary Index, identified by the Y01 extension, is a Data Files type and includes 6196 files.

The Corel Paradox Secondary Index (Y01), created by Corel, is one of file format they developed, and they also built 27 programs to support them.

Y01 file support extends to various operating systems, including Windows. When working with Y01 files, you can rely on 2 programs, including Corel Paradox and WordPerfect Office.

Programs that support Y01 files

How to open a Y01 file?

If you can’t open a Y01 file, it is usually because the necessary software is missing. To resolve the issue, select the right program from the list for your operating system. Then go to the official website of the developer, download the software, and install it.

When it comes to opening and working with Y01 files, Corel Paradox and WordPerfect Office are the top choices for users. To install the updated version of Corel Paradox, simply go to the Corel site and download the installer compatible with all major platforms.

Once the process is complete, Corel Paradox should take over as the default application for Y01 files.

Set Corel Paradox as the default Y01 program

Changing Default Programs in Windows

  1. Right-click on your Y01 file, then choose the "Open with" option and select "Choose another application" from the available options;
  2. In the pop-up window, select the Corel Paradox application;
  3. Check the "Always use this application" checkbox, and then click "OK" to apply the selected application as the default for opening Y01 files.

Change Default Program on Mac

  1. Right click or Control + left click on the desired Y01 file;
  2. Select "Open in application" and click "Other";
  3. At the bottom of the window, you will find the "Enable" menu. Default, will be set to "Recommended Programs";
  4. Choose "All Programs" in this menu and search for Corel Paradox. Check the box next to "Always open in app" to make it the default program.

Solve problems with Y01 files

Rest assured, any issues with Y01 files can typically be addressed with simple software adjustments. See the tips below for help.

Why does Corel Paradox stop responding or crash intermittently?

Corel Paradox crashes can be caused by outdated software. Keep your Corel products up to date by installing the latest updates.

Restarting your computer will solve many common problems, which is why it’s the first thing you should do before changing any settings related to the software.

What are the best practices for repairing a Y01 file that has gone bad?

Use a data recovery program to open the damaged Y01 file and from the menu choose "Repair" function to start the repair process. Allow the recovery process to complete, which will automatically repair the damaged data files.

What are the warning signs that my Y01 file may be corrupted?

Common indications of damaged Y01 data files are:

  • Error messages appear during the course of working with the file;
  • Opening the file results in an error or a failed attempt;
  • Unexpected expansion of the total size of the Y01 file;
  • Opening the file in Corel Paradox or other programs causes them to hang or crash;