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Core Services UI Agent is Stuck Verifying on Mac [Solved]

Restarting your Mac is the easiest fix

4 min. read

Published onJanuary 15, 2024

published onJanuary 15, 2024

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Key notes

You may have come across the Core Services UI Agent popup verifying apps after installation or a recent update. While that’s alright, problems begin when theCoreServicesUIAgentapp verification is stuck. And that’s what we will be fixing today!

What is Core Services UI Agent? It’s a part of Gatekeeper, the Mac’s built-in security tool, that ensures app installation from trusted sources. So, every time an app is downloaded, the graphics user interface agent,CoreServicesUIAgent, automatically begins to scan the files.

How do I get rid of the Core Services UI Agent when it’s stuck?

How do I get rid of the Core Services UI Agent when it’s stuck?

Before we start with the slightly complex solutions, try these quick ones:

1. Force quitCoreServicesUIAgentin Activity Monitor

Remember, as per our research,Force Quitbetter helps fix the problem thanQuit. So make sure you go with the former. Also, if you can’t findCoreServicesUIAgent, setActivity Monitorto listAll Processes.

Besides, if theCore Services UI Agentpop-up keeps appearing, terminate all related app processes as well. Activity Monitor is also of use whenMac is stuck onPreparing to copy.

2. Choose Open from the secondary menu

Manually choosingOpenalso helps when theCore Services UI Agentstarts verifying apps after an update, as is seen with Microsoft Outlook and OneDrive.

3. Reinstall the application from Apple’s App Store

While you could simply move the app to theBin, it doesn’t delete the related files, which may later trigger theCore Services UI Agentand get it stuck on verifying. So, we recommend removing all app files as well!

4. Use the built-in Installer

5. Allow app installation from trusted sources

If nothing else works, we recommend allowing app installation from untrusted sources to remove theCore Services UI Agentverifying app pop-up. This setting also helps whenSafari cannot download a file.

We don’t recommend downloading apps from untrusted or non-official sources, and your primary approach should be to get rid ofCore Services UI Agentwhen it’s not closing, rather than changing the installation settings.

Also, for enhanced security, we recommend getting aneffective antimalware software for Mac.

For any queries or to share which fix worked for you, drop a comment below.

More about the topics:Fix Mac issues,mac

Kazim Ali Alvi

Windows Hardware Expert

Kazim has always been fond of technology, be it scrolling through the settings on his iPhone, Android device, or Windows PC. He’s specialized in hardware devices, always ready to remove a screw or two to find out the real cause of a problem.

Long-time Windows user, Kazim is ready to provide a solution for your every software & hardware error on Windows 11, Windows 10 and any previous iteration. He’s also one of our experts in Networking & Security.

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Kazim Ali Alvi

Windows Hardware Expert

Kazim is specialized in hardware devices, always ready to remove a screw or two to find out the real cause of a problem.