We need to change some IDM program files to stop them from displaying fake serial number error messages. Here are some solutions that you can try before contacting the IDM support team.īy the way, this IDM support page lists some problems and possible solutions, but this is not enough to get you out of this situation. Or you may have used a trial version of IDM crack before but you have already bought a new IDM but still, you get the same error message when you try to register with your official serial number. If you have purchased IDM, you can cause several problems such as “IDM has been registered with a fake serial number or the serial number has been blocked”. How to Enable Dark Mode for Google Chrome.Best 8 Ways Activate IDM in Chrome: Just Drag and Drop.How To Fixed IDM errors (not working) on Google Chrome.How To Integrate IDM With Mozilla Firefox.The only difference between IDM and other popular download managers is that IDM is paid software which means you have to buy it to use it. How To Fix IDM Fake Serial Number Error (4 Easy and Effective Ways) How To Fix IDM Fake Serial Number Error (4 Easy and Effective Ways).