Improper RAR download: Any interruption during the downloading process might corrupt that RAR file, which results in inaccessibility. Upon experiencing troubles in accessing RAR files, you won't be able to access the valuable files from the compressed RAR. Clearly, this error indicates the corruption of the WinRAR archives. The files will not open and instead pop-up some error messages like damaged or invalid archive, unknown format, no files to extract, invalid RAR file error, and so on. In some cases, after downloading any RAR file from the internet or receiving it from a shared network, you would find that WinRAR file not opening.
To create this compressed file, the WinRAR tool is been highly preferred by the users. RAR is a compressed file, which proves to be flexible for transmission and efficient storage.