If you no longer need the IDMGCExt.crx file, you can remove it from your computer. To do this:
: Click Add Extension or Install when the prompt appears. Troubleshooting Tips idmgcext.crx file
And remove the extension folder from your browser profile. However, remnants in Windows Registry might cause harmless errors on browser launch. If you no longer need the IDMGCExt
Once installed, it allows IDM to "capture" download links from websites, including video streams from platforms like YouTube. File Format: file is essentially a renamed and signed ZIP archive containing JavaScript, JSON (manifest), and image assets. Stack Overflow File Locations idmgcext.crx file