SIK File Extension

Microsoft Word Backup
- File Type sik
- Developer Microsoft Corporation
- Popularity
- Application Microsoft Word
- Category Backup Files
What is a SIK file?
Files with the SIK extension are specifically tied to Microsoft Word Backup, a Backup Files type, and there are 395 files in this category.
The Microsoft Word Backup (SIK) was developed by Microsoft, which created file format and 242 programs to work with them.
SIK file support extends to various operating systems, including Windows, Mac OS and Linux. To open a SIK file, you can choose from 3 programs such as Microsoft Word, Microsoft 365 and Microsoft Office.
Programs that support SIK files
How to open a SIK file?
If you cannot open a SIK file, it is most often due to missing software. Select a program from the list according to your operating system. Then go to the official website of the program developer, download it, and install it on your device.
Thanks to their popularity, Microsoft Word, Microsoft 365 and Microsoft Office are often the go-to programs for managing SIK files. If you want the most recent release of Microsoft Word, head over to the Microsoft site and download the version designed to run on all platforms.
When you finish installing Microsoft Word, the system will automatically launch SIK files with it.
Set Microsoft Word as the default SIK application
Change the default app that opens a file on Mac
- Right-click or use Control + Left-click on the desired SIK file to open a menu where you can choose from multiple actions;
- Choose "Open in Application" and click "Other";
- At the bottom of the window, you will see the "Enable" menu. It is already set to the default option, "Recommended Programs";
- Within this menu, select "All Programs" and then search for Microsoft Word. Check the box next to "Always open in app" to make it the default program.
Change a default app in Windows
- Start by right-clicking on your SIK file, then select the "Open with" option and choose "Choose another app" from the menu that appears;
- From the options listed in the pop-up window, specifically choose Microsoft Word as the application to handle your SIK file;
- Be sure to check the "Always use this app" checkbox and click "OK" to save your preference.
Troubleshooting guide for SIK file complications
When facing challenges with SIK files, simple adjustments in your software can often solve the problem. Find helpful troubleshooting guidance below.
What Causes Microsoft Word to Crash Frequently?
Insufficient updates for Microsoft products can cause Microsoft Word to crash. Be sure to regularly install the latest software updates.
Restarting your computer is a crucial troubleshooting measure that can alleviate numerous common problems. Therefore, it is advisable to restart your computer before modifying any settings related to the software.
How can I restore a damaged SIK file?
Use Microsoft Word to open the damaged SIK file and from the menu, click "Repair" to start the repair operation. Wait for the recovery process to finish as it will automatically restore the damaged backup files.
What are the ways to check if my SIK file is damaged?
Characteristics of corrupted SIK backup files can include:
- The file encounters problems during the opening process or shows error indications;
- Editing the archive in Microsoft Word is hampered by poor overall performance;
- The file causes Microsoft Word or other software to hang or crash during various operations;
- An unexplained increase in the size of the SIK file;
- Actions performed on the file result in the appearance of error notifications;
How to edit a SIK file?
To modify SIK files, you need to install special software that makes it possible to open and edit backup files. Online SIK editors are more restricted compared to software designed for Microsoft Word Backup.
Best SIK editors 2026
After analyzing the criteria, we have created a list of SIK editors available for use.
| SIK Editor Software | Developer | Platforms | Overall Rating |
|---|---|---|---|
| Microsoft Word | Microsoft | Windows, Mac OS, Android, Apple iOS | 4.4 out of 5 (39 reviews) |






