Sp45367.exe

If you see these errors after uninstalling something, they are harmless remnants. If they appear frequently, you may need to clean your registry with tools like CCleaner or manually delete startup entries.

It wasn’t there last week. No new software installs. No USB drives plugged in. Just… there, sitting in Task Manager, using a steady 12% CPU and about 80 MB of RAM.

The answer is:

If you'd like, I can help you find the if you tell me: Your specific computer model ? Which Windows version you are running?

Resolves "PCI Serial Port" or "PCI Simple Communications Controller" unknown device errors. Sp45367.exe

Without more context about what "Sp45367.exe" specifically refers to, I can offer a general piece based on the implication that it might be related to technology, software, or computing.

Before you delete anything, perform these checks: If you see these errors after uninstalling something,

If you own an HP computer (laptop, desktop, or workstation), could be a legitimate driver installer or firmware utility. HP SoftPaq numbers are sequential, and SP45367 might correspond to a specific update for:

This looks like — possibly a password or session cookie grabber. No new software installs

Let's explore the facts in detail so you can determine which scenario applies to your situation.