Macbook Pro is having issues with various apps loading upon startup.

Hi kalyani0804,

Welcome to the Apple Community.

Macs generally work as they are set up to do.

It could be a setting somewhere ?

(Please excuse if the suggestions below are rather simplistic for you.)

As the random apps are loading on start up:

Wondering if your MacBook Pro is set up to re-load windows that were open when you last shut down ?

Log out, sleep, wake, restart, or shut down your Mac

Eg: If you don’t want app windows that are open to reopen when you log back in,

de-select “Reopen windows when logging back in.”

https://support.apple.com/en-au/guide/mac-help/mchlp2522/11.0/mac/11.0

Or are windows being "restored" when an app opens ?

See: Customise your Mac with System Preferences:

Eg: Check what you have selected In the "general" tab of System Preferences

(bottom section is reproduced below):

https://support.apple.com/en-au/guide/mac-help/mh15217/mac

Or, could it be something to do with

Working in multiple spaces on Mac: ?

https://support.apple.com/en-au/guide/mac-help/mh14112/mac

Hope this helps troubleshoot :)

Hi Kalyani0804,

Thank you for checking through the settings, and for your reply.

Mmmm. now I'm as stumped as you, and Apple support.

A virus would not normally stand a chance getting into a Mac.

Virus checkers are deemed unnecessary, and are sometime the cause of trouble.

Wondering if there is any third-party (non-Apple) software on your Mac that could be causing interference ?

Some Apps seem to be incompatible with Apple's latest Operating Systems, or some Apps may need to be updated.

Although I'm not one of them, I understand some of the experts here in the Apple Community, are adept at checking results from running "Etrecheck".

Etrecheck is a free download, that can generate a helpful report.(eg: to locate all the bits of any non-Apple software causing a problem so you can ensure it is removed).

https://etrecheck.com:

All the best :)

Any chance that at the time of Shutting down - the little tick to " Open Windows when . . . " is enabled. Any Open Application that is not 100% closed at that time - will automatically reappear upon the next restart.

Suggest downloading from a Trusted Developer and Respected ASC Contributor the application Malwarebytes for Mac. It is free or paid for added features. Run the Application and it should remove the malware / adware. Once done, restart computer and test.

There are no known Viruses in the wild that self replicate and affect macOS. There are Malware and Adware that does affect macOS and are often times downloaded as part of an Application from Third Party UnTrusted Site and get installed along with the Application.

Thanks for letting me know :)

All the best !

Wondering if the Mac OS 11.5.1 update may make a difference.