iMac Crashing After Monterey Upgrade

Hello!

+1 to P. Phillips. Mac computers do not need any sort of anti-virus software. Anti-virus can cause performance issues, security issues, and make macOS appear buggy. Your Mac is worse with these types of Apps installed.

In addition, Mac computers cannot get any traditional "viruses". They only area of concern is some malware, mostly adware, and it's easily avoidable. Do not install apps from unknown sources, and you'll be safe!

Here are some links that describe Apple's built-in malware protection, which are far superior:

•  macOS - Security - Apple
• Protecting against malware in macOS - Apple Support

Next, if you could, please upload a copy of your entire EtreCheck report. Doing so will allow us to provide accurate suggestions on your Mac. To do this, review How to use the Add Text Feature When Post… - Apple Community.

Jack

There are no known Windows-like Viruses in the wild that self replicate and affect macOS, because of the underling UNIX  Foundation and Permission Limitation. 

Additionally, specific to Big Sur macOS 11 and above. The Operating System resides in a Sealed and Read Only Volume that can not be opened by the User.

The Only thing this Antivirus software is protecting is the Bank Account of the Developers and for zero return to the User aside from the problems this software creates.

AntiVirus Developers purposefully Market their product to create a “ Fear Factor “. In so doing, creating a False Need for their Product.

The The Built in Security  is all that is required to protect the computer.

Any Third Party Applications that will interfere with the normal operation of the OS,  is an invitation for disaster and comprising the Operating System

Certain Applications maybe available on the Apple Apps Store - this only means the Developer is prepared to pay Apple a portion on each sale. What the Application may do to the computer is up to the User to check this out before purchase

Read some of the posting and arrive at your own conclusions.

Any of the below should be removed as per Developers Instructions

2  - Third Party Security Software 

This will include BitDefender , 

This will included Norton Antivirus 

 Sophos Av Software

Intego AntiVirus

 McAfee, 

Avast AntiVirus

Ad Guard,

 Webroot ,

 ESET ,

 Avira ,

AVG AntiVirus  

➡️  avira antivirus ⬅️

Trustee  

AntiVirus for Mac

F-Secure

Securemac

Cylance

PEB444 wrote:

Yep I do have a lot of rubbish on this Mac. What's the best way to uninstall those apps?

Hedging ones' bets by repeating to self.

Ok, will bit 👍

In this computer setup and condition ➡️

The steps in #1 below is predicated on the Offending  Applications has been Removed as per the Developers Specific Instruction 

#1 - Some Contributors suggest restarting in Recovery Mode and choosing to Reinstall the Operating System over  the existing installation. 

This may or may not replace elements of the Entire Operating System including the Home Folder ( User Account )  and replace any corrupted or removed elements of the Operating System and make thing right.

#2 - Then there are Other Contributors ( like myself ) would suggest  from this link Use Disk Utility to erase a Mac with Apple silicon.

For Intel computer >> Use Disk Utility to erase an Intel-based Mac followed by How to reinstall macOS

Thereafter to start from scratch and install all Required Application directly from the Apple Apps Store or Directly from the Developer.

If going this route - I suggest Not using Startup Assist to migrate things back as this will probably Re-Introduce the existing  issue that existed when the TM Backup was made 

Add On

User has an Old Version of 2023-01-31 18:12:48 TechTool Pro 12 - Crash Executable: /Applications/TechTool Pro 12.app

Memory, from Years ago, this application does install Their Third Party Kernel Extensions

According to the Developers Site the most recent version of there software is Version 17

Reference link below

https://www.micromat.com/products/techtool-pro/