Stopping the Internet Download Manager (IDM) dialog box from staying open or appearing unexpectedly can be done by adjusting IDM settings, browser extensions, or Windows startup items.
Here are the step-by-step methods to fix this, based on common solutions: Method 1: Disable Automatic Start (Startup Apps)
This prevents IDM from launching automatically when you turn on your computer. Open Task Manager (press Ctrl + Shift + Esc).
Go to the Startup tab (or “Startup apps” in newer Windows versions). Find IDMan.exe or Internet Download Manager. Right-click it and select Disable. Method 2: Change IDM Options Open the IDM application. Click on Options (icon in the top menu). Go to the General tab. Uncheck “Launch Internet Download Manager on startup”. Click OK. Method 3: Stop Automatic Download Grabber
If the box stays open because it is constantly capturing media, disable the capture feature. Open IDM. Go to Options -> General.
Click Edit next to “Customize IDM Download panels in browsers”.
Enable the option: Don’t start downloading from web-players automatically. Click OK. Method 4: Disable IDM Browser Extension
If you want to prevent IDM from interacting with your browser at all: Open your browser (Chrome, Edge, Firefox). Go to your Extensions or Add-ons page. Find the IDM Integration Module. Toggle the switch to Disable or Remove it. Method 5: Stop Startup from Registry Press Win + R, type regedit, and press Enter. Navigate to: HKEY_CURRENT_USER\Software\DownloadManager. Look for startup check entries (like checkupd). Right-click, select Modify, and change the value data to 0.
If you are trying to stop IDM from getting stuck at 99%, I can explain that process. Alternatively, if you’re trying to automate this, I can explain how to use AutoHotkey for this issue. Let me know which option you prefer.