OBI File Extension

Outlook RSS Subscription Format
- File Type obi
- Developer Microsoft
- Popularity
- Application Microsoft Outlook
- Category Data Files, Settings Files
- Format XML
What is a OBI file?
Outlook RSS Subscription Format files, recognized by the OBI extension, fall into the Data Files and Settings Files categories, amounting to 7386 files.
The Outlook RSS Subscription Format (OBI) was created by Microsoft, a company that developed file format and produced 242 programs for their use.
OBI files are supported by Windows and Mac OS. If you need to export a OBI file, you can use one of 2 programs, such as Microsoft Outlook and Microsoft Office.
Programs that support OBI files
How to open a OBI file?
If you’re having difficulty opening a OBI file, it is often due to not having the correct software. To solve the problem, choose a compatible program from the list. Then follow the link to the official developer site, download the software, and install it on your device.
Microsoft Outlook and Microsoft Office stand out as the preferred programs to manage OBI files effectively. To install the latest version of Microsoft Outlook on your computer, visit the Microsoft website where you can download the version available for all operating systems.
After installation, your operating system should automatically open OBI files with Microsoft Outlook.
Set Microsoft Outlook as the default OBI handler
Choose an app to open a file on Mac
- Right click or use Control + left click on the desired OBI file to launch the file options menu;
- Choose "Open in Application" and click "Other";
- Next, at the bottom of the window, you will see the "Enable" menu, in which "Recommended Programs" is selected by default;
- In this menu, select "All Programs", then find Microsoft Outlook and check the box next to "Always open in the application."
Set default programs for Windows
- Start by right-clicking on your OBI file, then select "Open With" and continue by clicking "Choose another app" from the options provided;
- In the pop-up window, find and select the Microsoft Outlook application from the available options;
- Make sure the "Always use this app" checkbox is checked and click "OK" to confirm your choice as the default app for opening OBI files.
Effective solutions for OBI file problems
There are some common issues with OBI files that can be resolved easily by making minor adjustments to your software. Below, you’ll find these issues along with practical troubleshooting tips.
What are the methods to detect if my OBI file has been corrupted?
OBI data files that have become corrupted may display one or more of the following symptoms:
- An unexplained increase in the size of the OBI file;
- Trying to work with the archive in Microsoft Outlook or other programs causes instability or program crashes;
- The file does not open correctly or displays error messages;
- While working with the file, error alerts are encountered;
Why does Microsoft Outlook crash?
Insufficient software updates can contribute to Microsoft Outlook crash. To avoid this, make sure that you have installed the latest updates for Microsoft products.
Restarting your computer can resolve numerous common problems, so it should be the initial step before changing any software-related settings.
How to repair a corrupted OBI file?
Open the damaged OBI file in a recovery program and select the "Repair" menu item to start the repair operation. Please wait patiently for the recovery process to finish as it will automatically repair the damaged data files.




