File Extension RCF

.RCF File

File extension: RCF
File type: Cache


Notes about the RCF file extension:



To open this file type, a required software must be installed. Without it you only see a Windows message "The following file cannot be opened" (Windows 7) or "How do you want to open this file?" (Windows 10) if you double-click the file. There click on "More apps" and choose a suitable software to view such files on your PC or from email attachments.

The RCF file type is primarily associated with 'Rhapsody' by RealNetworks. Rhapsody is powered by RealNetworks’ caching/streaming technology. This technology splits (or distills) audio files into two asymmetric pieces during the encoding process. The larger piece (called the Residual Audio Data, or RAD) contains 99% of the audio data and is streamed and cached (in encrypted form) to the subscriber’s hard drive during initial song playback. The remaining 1% of the file (called the Essential Audio, or EA) is streamed from RealNetworks’ servers and united (or rendered) with the larger file at playback, enabling subscribers to hear the sound. This process is nearly instantaneous and is invisible to the subscriber. A proprietary file called RADFILE.RCF holds the cache. On first play songs appear to stream from the Internet; on second play during a session, from the cache.

Detailed information for file extension RCF:


Primary association: Rhapsody
Company: RealNetworks

Other applications associated with file type RCF:

  • Colin Mc Rae Car Race (Configuration) This association is classified as Game.
  • Prototype (Game Data File) by Activision Blizzard Inc. This association is classified as Game.



To change file associations press Windows Key + X and then Apps and Features > Default apps > Choose default apps by file type. Invalid file associations could be the result of underlying issues within your Windows PC.

Technical data

To view technical data on file-extension RCF click this link to expand/hide the additional area.

System Info for File Extension .RCF

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and information FILExt collected directly from user systems.

ProgramID: SonicWALLGlobalVPNClient.Document
EXEFile: %ProgramFiles%\SONICW~1\SONICW~1\SWGVPN~1.EXE %1

ProgramID: ROXIO.Catalog.File
EXEFile: %ProgramFiles%\Roxio\WinOnCD 6 PE\\FileOnCd.exe %1

ProgramID: ROXIO.Catalog.File
EXEFile: %ProgramFiles%\Roxio\WinOnCD 6\\FileOnCd.exe

ProgramID: Regen RCF
EXEFile: %ProgramFiles%\OnSpec\All User\Regen\REGEN.EXE


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