However, users no need to worry too much about the high CPU power consumed by TrustedInstaller.exe, nor it’s act of a malicious program. TrustedInstaller simply run like a realtime task, make Windows slower and grinds to a halt.

The system process cannot be ended (killed or terminated) or have it’s priority altered to low or below normal. TrustedInstaller.exe high CPU usage problem happens in random, and normally only last a few minutes. In worse scenario, the computer is freezing, hanged and unusable. This problematic symptom may also appear right after system boots up into desktop, causing startup to be slower. When opening up Task Manager (TaskMgr) to investigate, “Processes” component shows that image or process named “TrustedInstaller.exe” is “system” process utilizing almost close to if not total 100% of the CPU resource usage, and using large amount of RAM memory. While Windows OS (such as Windows Vista, Windows 7, Windows 8, Windows 8.1 and Windows 10) is running fine, smoothly and quickly over a period of time, suddenly the system may becomes sluggish and slow in responding with non-stop hard disk activity.

Microsoft edge installer high cpu