You're here because you have a file that has a file extension ending in .zw. Files with the file extension .zw can only be launched by certain applications. It's possible that .zw files are data files rather than documents or media, which means they're not meant to be viewed at all.

Files with the ZW extension are text documents stored with ASCII encoding specifications for Chinese characters, and this encoding technology is also called A/CC. This means users can integrate Chinese characters and symbols into the content of their text files with the aid of a word processing application or text editing software that support the ZW format. The HZ text editing software can be used to create text documents saved in the default output file format of this software, which is the .hz extension, and an HZ file is almost the same as text documents saved with the .hw extension, except that an HZ file is integrated with different encoding specifications. This means the HZ program can be used to create, open and modify the content of files with the .hw extension, and the HZ text editor has versions that support Linux platforms, Mac-based systems and recent Microsoft Windows OS versions. There are other text editing applications that have integrated support for creating, opening and modifying these HW files, some of which are NJStar and the XingXing software. Originally, terminal communications programs use the HZ and HW formats for the transmission of text content with Chinese characters and symbols. As of this writing, the HZ and HW formats are rarely used because there are now many text content creation, editing and transmission applications with support for Chinese characters and symbols.

Launch a .zw file, or any other file on your PC, by double-clicking it. If your file associations are set up correctly, the application that's meant to open your .zw file will open it. It's possible you may need to download or purchase the correct application. It's also possible that you have the correct application on your PC, but .zw files aren't yet associated with it. In this case, when you try to open a .zw file, you can tell Windows which application is the correct one for that file. From then on, opening a  .zw file will open the correct application. Click here to fix .zw file association errors

Be careful not to rename the extension on .zw files, or any other files. This will not change the file type. Only special conversion software can change a file from one file type to another.

A file extension is the set of three or four characters at the end of a filename; in this case, .zw. File extensions tell you what type of file it is, and tell Windows what programs can open it. Windows often associates a default program to each file extension, so that when you double-click the file, the program launches automatically. When that program is no longer on your PC, you can sometimes get an error when you try to open the associated file.