RPMSG File Extension
Outlook Restricted Permission Message
- File Type rpmsg
- Developer Microsoft
- Popularity
- Application Microsoft Outlook
- Category Email Program Files, Data Files
- Format Binary
What is a RPMSG file?
Outlook Restricted Permission Message files, recognized by the RPMSG extension, fall into the Email Program Files and Data Files categories, amounting to 6246 files.
The Outlook Restricted Permission Message (RPMSG) was created by Microsoft, a company that developed file format and produced 242 programs for their use.
RPMSG files are compatible with various operating systems, including Windows and Mac OS as well as mobile platforms such as Apple iOS and Android. If you need to open a RPMSG file, you can use one of 3 programs, such as Microsoft Outlook, GigaTrust and GigaTrust Integrated Edition.
Programs that support RPMSG files
Windows
Mac OS
Android
Apple iOS
How to open a RPMSG file?
If you’re having difficulty opening a RPMSG 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, GigaTrust and GigaTrust Integrated Edition are among the most widely used programs for handling RPMSG files. To set up the newest version of Microsoft Outlook on your device, simply go to the official Microsoft website. There you can download the edition compatible with every operating system.
Once the process is complete, Microsoft Outlook should take over as the default application for RPMSG files.
Make Microsoft Outlook the default RPMSG viewer
Change the default app to open files on Mac
- Right click or use Control + Left Click on the desired RPMSG file to access a dropdown menu of actions;
- Choose "Open in Application" and click "Other";
- At the bottom of the window, you will find the "Enable" menu. Default, will be set to "Recommended Programs";
- Choose "All Programs" in this menu and search for Microsoft Outlook. Check the box next to "Always open in app" to make it the default program.
Change default programs in Windows
- Start by right-clicking on your RPMSG file, then select "Open With" and continue by clicking "Choose another app" from the options provided;
- Inside the popup window, scroll through the list of applications and specifically choose Microsoft Outlook as the application to associate with your RPMSG file;
- Check the "Always use this app" checkbox and click "OK".
How to edit a RPMSG file?
To modify RPMSG files, it is necessary to install dedicated software that lets you open and edit email program files. Online RPMSG editors generally offer fewer tools compared to programs designed for Outlook Restricted Permission Message.
Best RPMSG Editor Software in 2026
Based on the criteria above, here is a selection of RPMSG editors you can use.
| RPMSG Editor Software | Developer | Platforms | Overall Rating |
|---|---|---|---|
| Microsoft Outlook | Microsoft | Windows, Mac OS | 4.5 out of 5 (47 reviews) |
| GigaTrust | GigaTrust | Apple iOS | 4.3 out of 5 (42 reviews) |
| GigaTrust Integrated Edition | GigaTrust | Android | 4.2 out of 5 (40 reviews) |
Convert files to and from RPMSG
If you struggle with a RPMSG file, consider converting it to alternative formats such as CSV, PS or other similar file types.
It is important to understand that converting a RPMSG file might limit certain functions, but this conversion is usually reversible.
Convert RPMSG to other file formats
Finding answers to RPMSG file problems
Rest assured, any issues with RPMSG files can typically be addressed with simple software adjustments. See the tips below for help.
What are the steps to repair a damaged RPMSG file?
Open the damaged RPMSG file in a recovery program and select the "Repair" menu item to start the repair operation. Allow the recovery process to complete, which will automatically repair the damaged email program files.
What are the methods to detect if my RPMSG file has been corrupted?
The signs of corrupted RPMSG email program files can manifest as:
- Unexplained RPMSG file size inflation;
- Microsoft Outlook or other programs stop responding or crash when trying to handle the file;
- When opening the file, errors occur or the inability to access its contents;
- While working with the file, error alerts are encountered;
- The file shows slow performance when edited in Microsoft Outlook;
What are the reasons behind 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.
A computer restart is often the key to solving numerous common problems. That’s why, it is recommended to restart the computer before making any changes to the software settings.