Go to File > Save (Ctrl+S). If Windows denies saving, you did not open Notepad as Administrator. Close and retry.
A: Partially. Some domains like mc.corel.com and ipm.corel.com are shared across multiple Corel apps. The entries above may affect Corel Painter and Corel VideoStudio as well.
If you edit the Hosts file and Corel Draw X7 still asks for activation, check these three things: Corel Draw X7 Block Activation Hosts File
Issue 1: The Hosts file isn't saving.
Issue 2: Antivirus is overriding the Hosts file. Go to File > Save (Ctrl+S)
Issue 3: You are using a Cracked Patch.
Issue 4: IPv6 is interfering.
While the Hosts file is effective, a more robust method is to combine it with a firewall rule. This prevents Corel from bypassing the Hosts file via hardcoded DNS or direct IP access.