Since IDM version 6.30 Build 1 has officially supported Microsoft Edge on Windows 10. How to do it, please refer to the following article:
How to add Internet Download Manager to the Edge browser
Step 1: Start up Microsoft Edge browser, access the IDM extension , then click Get the app.
Step 2: Now Windows Store will start automatically, then access the page containing IDM Integration Module extension. You just need to click Get to download this extension to your computer.
Step 3: The process of downloading and installing IDM Integration Module utility takes place, you wait a moment to complete.
Step 4: Once the IDM Integration Module is installed, click on Launch to launch the extension.
Step 5: At this time, you will see a window asking to activate IDM Integration Module, click Turn it on to enable activation.
Step 6: Then, IDM Integration Module will be automatically activated. You can check their existence in Microsoft Edge by clicking the 3 horizontal dots icon in the top right corner of the browser, select Extensons.
Step 7: The Extensions interface appears, if you see IDM Integration Module is set to "ON" , you can use it always.
Step 8: Now, whenever you click on any download link, Internet Download Manager will identify and display a data download dialog box for you to manipulate.
So now whenever downloading files on Microsoft Edge browser, IDM will automatically start the link and download support extremely quickly.