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Basic information about R91 file

When there is a problem with opening files with the file extension R91（*.R91 or *.r91）, you do not need a computer expert. In most cases, using the helpful suggestions of experts contained in our website as well as appropriate programs, you can solve the problem with the R91 file yourself.

There are 1 file types using the R91 file extension in our database. In the further part of this page, you will find detail information about all the R91 file with their brief description and a list of programs that support R91 file sorted by operating systems. The table below provides useful information about the R91 file extension. It answers questions such as:
  • What is the R91 file?
  • How to open a R91 file?
  • What programs do I need to open a R91 file?
  • What programs help to create and edit a R91 file?
  • How to convert R91 files to another file format?
  • How to convert another files to R91 file format?


1.Detail information about R91 file extension: RAR Compressed Files From A Multi-volume Archive

File type RAR Compressed Files From A Multi-volume Archive Category Backup Files
Developer Eugene Roshal File format N/A
Description R91 file is a RAR Compressed Files From A Multi-volume Archive developed by Eugene Roshal. Full format name of files that use R91 extension is RAR Compressed Formats From A Multi-volume Archive. Eugene Roshal defined the RAR Compressed Formats From A Multi-volume Archive format standard. R91 files are supported by software applications available for devices running Windows. The software recommended for managing R91 files is WinRAR. WinRAR software was developed by win.rar GmbH, and on its official website you may find more information about R91 files or the WinRAR software program.
Software programs that will open, edit or convert R91 files

Windows		 WinRAR



Can't open a R91 file?

When you click a file to open it, operating system examines the filename extension. If operating system recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When operating system does not recognize a filename extension, you receive the following message:

”Can't open this file: example.R91”。

To open this file, you install one of the applications from the list of software programs that you found here, you should be able to open, edit or convert the file with the R91 extension without any issue.


Where I can download the application that support R91 file?

If you do not know where you can download the application from our list, click on the link (which is the name of the program), you will find more information there on the location where to download the required application. Most often they are the websites of software manufacturers.


How to change file associations?

  • Right-click a file with the extension whose association you want to change, and then click "Open With".
  • In the "Open With" dialog box, click the program whith which you want the file to open, or click "Browse" to locate the program that you want.
  • Select the ”Always use the selected program to open this kind of file” check box.


Can I change the extension of R91 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/open the file. The problem is, changing the file extension does not change the file format. Select a software program from our list and install it on your computer. If the file has not opened correctly, you have to look for a different software program from our list. Sometimes you have to repeat the operation several times.


What else may cause problems width open a R91 file?

The reasons for the lack of the ability to open a R91 file on your computer may be at least several. The easiest thing is to find a suitable application installed on your computer, which will open a R91 file. If there is still something wrong, you might want to check:

  • Whether the R91 file is damaged.
  • Whether the R91 file is incorrectly linked in the registry entries.
  • Whether the R91 file extension has been accidentally removed from the Windows registry.
  • Whether the installation of an application that supports the R91 file format is incompletely.
  • Whether the R91 file is infected.
  • Whether the drivers of the equipment used for opening a R91 file are up to date.
  • Whether your computer has enough hardware resources to open a R91 file.

If the R91 file still not working with your software after eliminating the above shortcomings? That means that the problem is more complex and requires the help of a specialist.