1. R81 File Extension
2. How to open R81 file?

2.1 Download and install application that supports R81 files
1. 2.1.1 Programs that support R81 files
2.2 Verify whether R81 files are associated with appropriate software
2.3 Check R81 file for other errors

3. Similar file extensions

R81 File Extension

File type RAR Compressed Formats From A Multi-volume Archive
File developer N/A
File category Backup Files
File popularity rating

How to open R81 file?

If given user account does not have necessary permissions to open files with R81 extension, it is highly probable that no program that supports given files is installed on the users’ system. Below is a list of actions user should pursue in order to resolve most common problems.

Step 1. Download and install application that supports R81 files

After the application has been installed, the system should automatically open R81 files with given application. Below is the list of relevant programs along with operating systems they are available for:

Programs that support R81 files

Windows

WinRAR

Step 2. Verify whether R81 files are associated with appropriate software

It is possible that an application that supports R81 files is not associated with such files. In such case, the program should by manually associated with R81 files (right-click on the file icon → Properties → General Tab → In submenu "Open with" and click on "Change" button. System will display a list of suggested programs that support R81 files. Choose the application by checking the box "Always use the selected application to open this kind of files". System will store this information in its registry and use it to open R81 files with the selected program.

Changing R81 file association in registry

File association for R81 files can be edited manually by editing appropriate entry in Windows System Registry. However, it is discouraged as it may introduce errors to registry if not done properly and may even damage the system.

Step 3. Check R81 file for other errors

R81 file was not copied properly from storage medium.
Antivirus application prevents opening R81 files. In that case it is recommended to exercise extreme caution and recover or delete infected R81 file. It is also advised to scan the entire system for malicious software and viruses with antivirus software.
For R81 files downloaded from the internet it is advised to check if the file has been downloaded completely and is not corrupted. If not, the file should be re-downloaded.

Similar file extensions

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