SIS file extension
The table below provides useful information about the .sis file extension. It answers questions such as:
- What is the .sis file?
- What program do I need to open a .sis file?
- How can the .sis file be opened, edited or printed?
- How can I convert .sis files to another format?
Table of Contents
- ✅ Symbian Install Package
- ✅ Steam Game Backup Info
- 🔄 .sis file converters
- 🚫 .sis file related errors
We hope you find this page helpful and a valuable resource!
2 extension(s) and 0 alias(es) found in database
✅ Symbian Install Package

SIS file is a Symbian Install Package. The SIS file is a standard and convenient way to distribute Symbian applications.
✅ Steam Game Backup Info

SIS file is a Steam Game Backup Info. Steam is a digital distribution, digital rights management, multiplayer and communications platform developed by Valve Corporation.
Other types of files may also use the .sis file extension.
🚫 The .sis file extension is often given incorrectly!
According to the searches on our site, these misspellings were the most common in the past year:
Is it possible that the filename extension is misspelled?
We found the following similar file extensions in our database:
🔴 Can't open a .sis file?
When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:
Windows cannot open this file:
example.sis
To open this file, Windows needs to know what program you want to use to open it...
If you don't know how to set the .sis file association, check the FAQ.
🔴 Can I change the extension of files?
Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.
If you have helpful information about the .sis file extension, write to us!