Windows does not natively support RAR files, so you can't extract their contents on your hard drive without using other software. Use WinRAR, WinZIP or 7-Zip to extract the contents of the archive. The utilities can also create RAR, ZIP and 7Z archives if you need to archive your files.
RAR archives can contain malicious files that can infect your computer with viruses or make it vulnerable to attacks. Keeping an up-to-date anti-virus program can protect you from most of these threats.
Download and Install the Software
Download WinRAR, WinZIP or 7-Zip for your version of Windows. You can evaluate WinRAR and WinZIP for free; 7-Zip is open-source software.
Double-click the installer and install the WinRAR, WinZIP or 7-Zip utility by following the instructions.
Extract the Contents of the Archive
Any of the three tools can extract RAR archives. Furthermore, WinRAR, WinZIP and 7-Zip can open protected RAR files if you know the correct password.
Launch the program in Windows 8.1 by pressing Windows-S to display the Search charm, typing WinRAR, WinZip or 7-Zip into the Search field and then clicking the utility in the list of results.
Press Ctrl-O to display the Open dialog in WinRAR or WinZip and then open the RAR file. In the 7-Zip File Manager app, select the folder that contains the archive and then double-click it to view its contents.
Click Extract To in WinRAR or Unzip To (in the Action pane) in WinZip and select the destination folder. In 7-Zip, click the Extract button and select a folder.
Click OK or Unzip to extract the contents of the archive on the hard drive.