<p>If you are lucky, your file will open name.cdr any supporting zip archiver. If there is a content folder, and in it riffData.cdr, you are saved. Corel create a new file, save, open a file. Remove content folder to a new file and replace it with the same name from your broken file. Then this new file open in Corel. Voila, you have restored Corel file.<br>
But we can have a good look at unlucky case, then you need to use one of special tools for invalid Coreldraw files. One of them be worthy of be mentioned <a href="https://onlinefile.repair/en/coreldraw.html">https://onlinefile.repair/en/coreldraw.html</a> It is online service that works easier that a tool....</p>