Some Mac users may notice that a process called “ApplicationsStorageExtension” is running in the background, using a large amount of CPU and memory resources.

Typically this process is seen when a computer feels sluggish and a user ventures into Activity Monitor to locate errant processes or whatever is consuming system resources.

What is ApplicationsStorageExtension on the Mac? Why is it using so much CPU / Memory?

The ApplicationsStorageExtension appears to be related to the “Storage” calculations available in the About This Mac screen (in MacOS…