After the update Catalina 10.15.7 have problems with the Internet connection

I face the same issue, all of a sudden my network stopped working for few services like , Slack.. other stuff was working well, tried rebooting my machine but it did not solve my issue. Later on my IT team suggested to change the location settings in network panel and this solved the issue.

Hope it will help

Hey there!

Are you saying that also in recovery mode > Get Help Online, you still can’t access a web site?

If you can, then I may have a few suggestions that may just work, (I know you’ve done much so far).

If not, then I may try, (If you haven’t already), disconnecting your router from power for a minute or so, reconnecting it, and trying again after a few minutes).

I have seen push back from this step when a client says, “But all of my other devices connect just fine”, yet cycling, (not resetting), the router may force the the re-connection between the two.

Likewise, in other situations I’ve seen the same situation, other devices work just fine but not the Mac. And after exhausting all possible steps, having the internet provider either update the router firmware, or even replacing it all together, and it works like a champ.

Another good step may be (while in recovery mode) to confirm and/or change the system date and time if wrong, it may not connect at all.

While in recovery mode, open Utilities > Terminal. Type “date” without the quotes and hit Enter, (Be sure to see the time zone also, many times it’s UTC, and not PDT or EST etc. if wrong, let me know.

Otherwise if it does work fine in recovery mode, I know a few ways that you may not have tried yet to fix it. Likewise, believe it or not, just a standard Reinstall if the OS may just fix the problem, as I’ve also seen before.

Also, I do know that sometimes, a Mac with an existing hardware problem which may not show symptoms on an earlier OS, are eventually revealed following a software update

Hope that’s not the case for you, but otherwise if it works just fine while in recovery mode, that’s a good sign, which means your network and Mac are working fine. Otherwise it’s usually an issue with the network, or the hardware, but most of the time it does work there, and it’s either some software, or corrupted network configuration as the cause etc., which can be fixed.

If that’s the case, I believe I did have an earlier reply with some extra steps, but can’t recall right now if it was this conversation, if not I can provide them again depending on the answers.

(On one of my other replies, I did mention the Xfinity network provider, if you do have them, and all else fails, I may have a simple, fast solution). Best!

....To the path of least resistance, (Which unfortunately isn’t always the case, but it can be a chess game at times).

Well, my still supported 2019 MacBook Pro also has the WiFi connection dropping issue unless I'm sitting on top of one of my access points or router. This issue began with Catalina 10.15.6 and 10.15.7 (10.15.7 allegedly contained a WiFi connection drop fix) I'm also experiencing the same issue with my 2018 iPhone 10s Max with iOS 14.x (the "x" means 14.0 - 14.3). And, after extensive network testing (I used to run a networking company specializing in high speed wireless municipal area networks—WMANs) I've concluded Apple has either made a significant undisclosed change in the OS or has screwed up the WiFi driver. This driver is common between MacOS and iOS and why Apple device users would experience WiFi dropping issue on both OSes.

I've made zero changes to my home WiFi network since installing Catalina 10.15.6 and 10.15.7 and iOS 14.x. And, interestingly, my 2011 13" MacBook Pro (currently used as a server) does not drop the WiFi connection anywhere on my property. Why? Because it's not running and unable to be upgraded to Catalina. Likewise, my older iPhone 6+, my wife's iPhone 8+, and 2 older iPhone 5S phones will not drop off my WiFi network. Why? Because they're not running iOS 14.x.

I also threw in the towel and purchased a USB Wi-Fi adapter. My MacBook Pro now operates as it should. The $25 allows me to get a few more years of use from the MacBook and less frustration until Apple fixes their (now obvious) Wi-Fi adapter driver problem.

Did you read the posts here about disabling WPA3 in the router?

It was the removal of Malwarebytes that fixed it for me

I had the same problem. I noticed it immediately after the update, but never thought that the error was on my Macbook.

Instead I tinkered with firmware on router multiple times in the last 2-3 weeks trying to get the connection to work. I also tried SMC, PRAM resets to no avail.

On seeing this thread, I uninstalled my firewall (Avast) and for the past 24 hours, I have not noticed the issue.

This is not a desirable situation, because an Antivirus / Firewall solution should not result in network drops. Looking at the other posts in this thread Norton and CleanMyMac have also resulted in the same regression.

I request you to solve this bug, because these security solutions are a work requirement. An update should not cause conflicts with Security software.

After trying everything, I just turned off the router for 1-2 minutes and turned it back on and everything seems to work now. I tried almost all suggestions like deleting the cleaning apps, third party apps that I wasn't using, any VPN, antivirus, resetting the NVRAM, change DNS settings, adding new location in the Network, installing Etrecheck and deleting all the files that it suggested and finally restarting the router.

I don't know what fixed my problem but you should try restarting the router first.

Are you pinging an IP address or using a name?

Usually when the connection is on but one cannot reach any sites there is a problem with the DNS settings.

This is true!!!

thanks!

i m cleared dns settings - and all works!!!

You seem to have installed some variant of "cleanmymac" - this is known to corrupt every system it is installed on - very BAD.

Also:

Kernel Extensions:
  /Applications/Turbo Boost Switcher.app
    DisableTurboBoost.32bits.kext (0.0.1 - SDK 10.7)

  /Applications/duet.app
    DuetDisplay.kext (2.1.4 - SDK 10.9)

The first of these two is OLD - it is built with the 10.7 (Lion) SDK - and judging by its name, 32bits, which probably means it does not work. Why would one want to disable Turbo Boost, or install something that interferes with how the OS manages the CPU is, sorry, beyond me. I totally advise uninstalling that.

The second one is also somewhat old, and probably not compatible. In addition, I suppose it works over Wifi, which may indicate it could have something to do with the problem.

Hi!

I have noticed this issue too, and so just added below my setup in case it helps anyone:

MacBook Pro (2016) and I have a Google Nest Wifi at home (Vodafone is internet provider) and BT modem in the office.

I also had downloaded Norton Small Business recently and so I thought this was the issue, as all other devices connect to the internet fine.

However, after further testing and using another Mac (with an older OS on it), I found that it connected to the internet fine.

What I have noticed is that on the latest Mac OS, I cannot connect to the internet via my Google Nest Wifi, but I can connect fine if I use the internet providers modem. All other devices are able to connect using the Google Nest Wifi (including the Mac with the older OS), so by implication, I think the cause is the latest Mac OS rather than Norton or anything else.

Hope this may help others.

And here we go again... Apple is not here. And there is nothing to fix.

Start in Safe Mode. Wifi works?

Login to a new user account. Wifi works?

Something you have running in your account is causing the problem.