Tips to open ICS file

Can't open the ICS file? You are not the only one. Thousands of users face similar problems every day. Below you will find tips on how to open ICS files as well as a list of programs that support ICS files.

ICS file extension

File Name ICalendar Format
File Category Misc Files

The ICS file is supported on 5 operating systems. Depending on your operating system, you may need different software to handle the ICS files. Below is a summary of the number of programs that support and open the ICS file on each system platform.

Operating systems
  • 2
  • 2
  • 2
  • 0
  • 0
  • 0

What is ICS file?

An .ICS file is a universal format for calendar entries. The content is saved in text form. The file contains information such as the name of the event or its date. Data in .ICS format can be imported into any calendar program. Importing the file will add the event to the user's calendar. Depending on the selected calendar, it can be saved only locally and replicated to other devices and users in the case of a shared calendar.

How to open ICS file?

The main problem with ICalendar Format is that the ICS file is incorrectly associated with programs. This causes the file ICS to open by system applications not designed for this purpose, or to display a message that there is no associated program. This problem can be easily remedied.

The first thing you should do is just "doubleclick" on the ICS file icon you want to open. If the operating system has an appropriate application to support it and there is also an association between the file and the program, the file should be opened.

Step 1. Install Mozilla Sunbird

An often overlooked issue is to make sure that Mozilla Sunbird is installed on the computer. This can be achieved by typing Mozilla Sunbird into the operating system search engine. If it is not, installation may solve the problem, as most applications create file associations during installation. Below is a list of programs that support the file ICS.

Programs to open ICS file

Remember to download programs supporting ICS files only from verified and safe sources. We suggest using the websites of software developers.

Step 2. Create association of Mozilla Sunbird with ICS files

However, it may happen that the application itself does not cause the ICS file to open in the Mozilla Sunbird application, but you can set it manually. The association can be created using the drop-down list available by right-clicking on the file and selecting Properties. Information about the file and the program that the file is associated with are available here. Using the "Change" button we can set the program to handle this type. If there is no software on the list, simply select "Browse" and manually select the directory where the application is installed. However, it is important to check the "Always use the selected program ..." box, this will allow you to permanently associate the ICS file with the Mozilla Sunbird application.

Step 3. Update Mozilla Sunbird to the latest version

If, however, after binding Mozilla Sunbird with ICalendar Format there were still problems, you should update the program to the latest version.

Step 4. Check for the following problems with the ICS file

The problem may also be with the file itself if the above steps don't work. File problems can be divided into the following:

The affected file may be 0 KB or smaller than expected. This is most often caused by a problem while downloading the ICS file. Downloading the file again should fix the problem.
The computer may have fallen victim to a computer virus or hacker. Perform a virus scan using available and up-to-date anti-virus software. If this is not possible, you can use the online scanner. However, it is important to scan the entire system, not only the file ICS or the program directory. Sometimes virus-infected ICS files cannot be recovered, so make a backup in advance.
This can happen especially when the program is dynamically developed and the structure of the ICS files changes over time. These problems are known and are often very easy to fix using the software developers's website.
There can be many reasons for the failure. Repairing is very dependent on the file type. Sometimes the program itself has options to repair the most popular ICS file corruption.
The program can also signal the fact of encryption. The encrypted ICS files can be used by the device on which they were encrypted, on any other device it is required to have the appropriate cryptographic key and decrypt the file before its recovery.
Some of the system directories are excluded from modification. These directories are write-protected to them and it's very hard to fix this problem. Copying the ICS file to another location will fix the problem.
This can happen on a file that does not support multiple access. In this case, the ICS file is blocked by the first application to open it. Running programs (including those in the background) should be verified. Sometimes you have to wait for the session to the file ICS to close. Antivirus programs or a backup being made may lock the file for a while without the user's knowledge. If this does not work either, restart the device.