Why is my Windows 10 PC so slow after the last update?

After the latest Windows update, my computer takes forever to boot and apps are sluggish. What can I do to fix this without reinstalling Windows?

This is a common issue. Open Task Manager and disable unnecessary startup apps. Also, check if the update turned back on visual effects or background apps.

Run “sfc /scannow” in Command Prompt as admin. It can fix system file errors caused by the update.