I can't update my macOS since April. I have accidentally removed a folder from my Bitdefender antivirus and it's not working properly. I can't remove the antivirus either.
Could this be the reason I can't do any updates on my computer?
do we need antivirus for MacBook?
MacBook Pro 13″, macOS 10.15
As there are no viruses that attack the mac then there is no need for anti-virus apps.
At best they just use up system resources and slow your mac down, at worst they will
often flag up files as threats which could be essential system files which you may go
ahead and delete them which will harm your mac.
The same goes for any cleaning or optimisation apps, the mac does not need them for
the same reasons. The mac looks after itself on its own.
There is malware/ adware which can be dealt with by installing,
https://www.malwarebytes.com/mac/ the free version will do.
What updates were you wanting to install, updates to Catalina can be downloaded
from here, Apple - Support - Downloads once downloaded double-click to install.
Always make a full backup first.
To uninstall BitDefender go to their website and look fo r uninstall instructions.
Ok open System Preferences> Software Update and see if it picks up the Supplemental Update.
If no updates are found then don't try and install the supplemental again.
Are you going to try and install Big Sur.
Thank you for your feedback eau rouge. I am trying to install the latest (Big Sur). However, it says that the security updates could not be installed or it gives me a notification that update is failed.
The security updates were while upgrading to Catalina.
for Big Sur, I tried to upgrade several times it says “an error occurred while installing the selected updates”
I have 2017 MacBook and I do have enough storage.
Thank you eau rouge.
i have downloaded the first part. For the second, it says I don’t have volume although I freed a lot of space. Why?
I did install the combo.. and just did another time and the computer was restarted successfully.
I can't install the supplemental though
The restart seems not to be picking the update. Why is it so complicated ?!
Moving from one OS like Catalina to a newer OS like Big Sur is called an upgrade.
Does your mac meet the requirements for installing Big Sur.
How to upgrade to macOS Big Sur - Apple Support
Go to Section 1 Check Compatibility and see if your mac qualifies for the upgrade.
Which Security Updates were you trying to install, as far as I am aware there are no Security Updates for Catalina
just the 10.15.7 Combo Update and the 10.15.7 Supplemental Combo Update.
And there are certainly no Security Updates for Big Sur.
So can you give more information.
Instead of trying to update through System Preferences> Software Update
try downloading the updates via the Apple Support Downloads page
as I described earlier.
Make sure your mac is connected to your router via cable not WiFi.
Start with this one,
https://support.apple.com/kb/DL2052?viewlocale=en_US&locale=en_US
Once downloaded Double- click to install.
After that has been installed download this one,
https://support.apple.com/kb/DL2061?viewlocale=en_US&locale=en_US
Once downloaded Double- click to install.
After you have done that then you can try upgrading to Big Sur.
Have you installed the 10.15.7 Combo update, the 10.15.7 Supplemental Combo will not install until you have installed the first update.
I did mention that you need to download and install the update first before moving to the second one.
Also read this, https://discussions.apple.com/docs/DOC-8841
macOS Catalina
