Software & Apps Windows How Do I Find My Internet Download Manager Serial Number? What to do when you've lost your IDM Serial Share Pin Email Print Windows The Ultimate Laptop Buying Guide By Tim Fisher General Manager, VP, Lifewire.com Tim Fisher has 30+ years' professional technology support experience. He writes troubleshooting content and is the General Manager of Lifewire. our editorial process Facebook Twitter LinkedIn Tim Fisher Updated May 30, 2019 Internet Download Manager is one of the most popular download managers in the world and, like most commercial programs, requires a unique serial number before it can be used. IDM does have a 30-day trial period but this demo window is not extendable. So if you've been using Internet Download Manager for a while, and are being prompted for a serial number, this is why. The Internet Download Manager serial number is technically a product key and not a serial number but many developers use the two terms synonymously. How to Find Your Internet Download Manager Serial Number You have two major ways to get your hands on your IDM serial number: through IDM's automatic online serial number retrieval tool or by using a product-key-finder program. The serial number retrieval tool on IDM's website is probably your best bet, so long as you were the person who purchased the program. A key-finder tool is a way to go in pretty much every other situation with a lost IDM serial number. We'll dive in moore on both of these methods below. Use IDM's Serial Number Retrieval Tool The quickest, least painful, and most official way to get your hands on your legitimate, paid-for Internet Download Manager serial number is to use their online tool to have it sent to you. The process is easy: Visit the Internet Download Manager Serial Number Tool page. Enter the email address you used when you purchased IDM. Enter the code as shown. Press the Submit Query button. A few minutes later, you'll receive an email from Tonec Inc., the folks who create and sell IDM. In it, you'll find your IDM serial number, which you can use to reinstall the program. However, if you no longer have access to the email address that you used to purchase Internet Download Manager, there's no way to get your IDM serial number this way. You'll need to try a product-key finder or buy a new copy of IDM. Find Your IDM Serial With a Product-Key-Finder Program A product-key-finder program will find the product keys and serial numbers for the software installed on your computer. Most programs that require serial numbers store them in the Windows Registry after they're entered, usually during or soon after you install the program. This is also the case with Internet Download Manager. So long as IDM is still installed, or in some cases even if it's not installed but it hasn't been too long since it was previously installed, a product key finder tool should be able to automatically locate, decrypt, and show you your legitimate IDM serial number. Here's how to do it: Download LicenseCrawler, one of many free product key finder programs but one that we've confirmed will locate an IDM serial number, assuming it's still in the registry. Open LicenseCrawler and press Search. Wait while it scans the Windows Registry and locates the product keys (serial numbers) for your installed software. Once complete, scroll down until you find Internet Download Manager or IDM in the list. Write or securely store the IDM serial number, which appears as four sets of five characters, like xxxxx-xxxxx-xxxxx-xxxxx. Now that you have your IDM serial number, you can use it to reinstall the program. If LicenseCrawler doesn't work, or you don't want to use it for some reason, you're welcome to try any of the many free product key finder programs out there. Other IDM Serial Options The only other legal and ethical way to get a fully working version of Internet Download Manager is to buy a copy of the program. Yes, there are lists of IDM serials. Yes, there are key generators, or keygens, that serve up custom IDM serial numbers forever. However, these are not legal ways of obtaining the program. Not only that, there are other concerns with keygens as well. If you purchased a copy of IDM, do your due diligence and contact Tonec, try some key finder tools, dig through your old emails... whatever you need to do. However, if you haven't bought it, and are just trying to get it for free, you should buy it just like (most) everyone else.