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Application using this process: .NET Global Assembly Cache Tool
Recommended: Scan your system for invalid registry entries.
What is gacutil.exe doing on my computer?
gacutil.exe is the Global Assembly Cache Tool, an older command-line utility that shipped with .NET 1.1 and is still available with the .NET SDK.
The Global Assembly Cache (GAC) is a machine-wide CLI assembly cache for the Common Language Infrastructure (CLI).
Non-system processes like gacutil.exe originate from software you installed on your system. Since most applications store data in your system's registry, it is likely that over time your registry suffers fragmentation and accumulates invalid entries which can affect your PC's performance. It is recommended that you check your registry to identify slowdown issues.