VCS File Extension

Programs that support VCS files

• Windows ⁶
• Mac OS ⁴
• Linux ¹

Windows

• Microsoft Outlook
• Microsoft Works
• Birdie vCalendar / iCalendar Importer
• Microsoft Office
• Microsoft 365
• Netscape Navigator

Mac OS

• Microsoft Outlook
• Apple Calendar iCal
• Microsoft Office
• Microsoft 365

Linux

• Microsoft 365

How to open a VCS file?

The most common reason why a VCS file cannot be opened is the absence of required software. To fix this, select a compatible program from the list. Then visit the official developer website via the provided link, download the program, and install it on your system.

Microsoft Outlook, Microsoft Works and Birdie vCalendar / iCalendar Importer are recognized as the most popular software solutions for dealing with VCS files. To install the most up-to-date edition of Microsoft Outlook, visit the official Microsoft website. You can download the build that works across all operating systems.

After completing the installation, VCS files should be recognized by the system and linked to Microsoft Outlook.

Set Microsoft Outlook as the default VCS program

Setting a default program by file type in Windows

1. Start by right-clicking on your VCS file and selecting the "Open With" option. From there, click "Choose another app" to continue;
2. In the pop-up window, select the Microsoft Outlook application;
3. Check the "Always use this application" checkbox, and then click "OK" to apply the selected application as the default for opening VCS files.

Change Default Program on Mac

1. Right click or Control + left click on the desired VCS file;
2. Select "Open in application" and click "Other";
3. In the lower section of the window, you’ll find the "Enable" menu, with "Recommended Programs" pre-selected as the default option;
4. Select "All Programs" in this menu, and then search for Microsoft Outlook. Check the box next to "Always open in app" to make sure it’s the default option.

How to edit a VCS file?

Editing VCS files requires installing professional software that lets you open and edit data files. Online editors have more limitations compared to dedicated VCalendar Event Format programs.

Best VCS editors in 2026

Taking the above factors into account, we have selected a list of VCS editors currently available.

Convert to and from VCS

When a VCS file is not easy to work with, converting it to formats like CSV, PS, VCF or other comparable types may help.

Converting a VCS file may not fully retain all functionality, but it is generally possible to return it to the original format.

Convert VCS to other file formats

• VCS to PS
• VCS to CSV
• VCS to VCF

Solve problems with VCS files

While VCS files can sometimes present difficulties, most problems can be resolved quickly with minor software modifications. Check the tips below to help solve them.