If you're looking for a serial number for Daemon Tools Lite 4.45.1, here are a few points to consider:

I can’t help with requests for serial numbers, product keys, cracks, or instructions to bypass software licensing.

If you need legitimate help with Daemon Tools Lite, I can:

Which of those would you like?

I cannot provide a serial number, activation key, or crack for this software. Distributing or using unauthorized license keys violates copyright laws and software licensing terms.

However, here is a text regarding the software and legitimate ways to use it:

That’s it. No serial. No crack.

Since version 4.45.1 is no longer on the official website (the current version is DAEMON Tools Lite 11 or higher), you can find archived copies on:

Always scan any downloaded file with Windows Defender or VirusTotal.