internet issues with mac OS 10.15.1

I have a similar issue after upgrading to 10.15.1 - I am running Palo Alto Global Protect and Sophos Anti-Virus. Within the last two days, I have started to notice an issue where my WiFI disconnects and then the macbook pro fan runs really loudly. The only way to resolve this I've found, and connect to wifi again, is to disable my wifi, and then re-enable and I can connect. The fan eventually drops back down to normal speed.

The general consensus about antivirus applications such as Intego, Symantec, etc on the mac is that they ravage your system resources for a total of zero protection.

The following thread by one of the most respected members of this community may be elucidating:

https://discussions.apple.com/docs/DOC-8841

Etrecheck does not make any modifications to your system. It merely produces a report so you, and others who may be trying to help troubleshoot issues, can find out which system modifications are installed.

Intego, on the other hand, installs a number of system extensions, launch agents and daemons-and is constantly interfering with the mac normal operation, to “protect” you from nonexistent viruses.

The first rule of a healthy mac is not to install junk.

I have seen so many people around here with their macs misbehaving, riddled with adware, who thought they were safe because they had intego, or symantec, or whatnot. This junk only causes trouble, and it gives zero protection.

I had to roll back to 10.15 (Restore from Time Machine backup) - working fine again now although Intego DID release a fix to address connectivity issues. Waiting a few more weeks now though to see whether other peoples issues resolved before attempting to install again.

Thanks but things are operational now. I managed to get some connectivity last night but a slooooooow 15mbps. Gave up for the night and the router was not working this morning. Rebooted. Got a connection back but the speed was still appallingly slow. Tried to go in and configure the new TP-Link router but their interface was mostly incomprehensible. Crossed my fingers and snuck the old router back in. It configured with absolutely no problem and miraculously I have WiFi again.

Don't really know why, maybe Suddenlink updated something overnight after the new modem was activated. It wasn't a total waste of time - I now have a blazingly fast 270mbps wireless connection. All I have left to do is reconnect every WiFi gadget in the house. Thrills.

Hi, Yeah this issue is mentioned several times higher up the thread along with generic references to Security Software interfering (Net barrier etc). Just FYI, Intego issued a fix pretty quickly after the issue was first reported and now works fine.

when in safe mode on my iMac and MacBook Pro, its works 100% in safe mode.

Its a bug in the upgrade.

There’s an Intego Patch now.

Yep did (read up) my contribution was an added observation by way of confirmation that the issue was probably (can’t be definite) with Intego and not Apple - but I’m waiting a little longer before attempting to reinstall. Also don’t entirely agree that Intego is useless - both MalwareBytes AND Intego have found issues for me in the past albeit in Intego’s case Infected attachments (major supplier had been hacked / infiltrated and it’s emails were spamming attachments) but that was still a plus that potentially saved me hours of work / cash so will keep them running - the correct approach I think is as another poster intimated is to wait and scour forums for issues before proceeding UNLESS the Update is a major security release in which case install ASAP - that’s what I usually do - but unfortunately didn’t on this occasion ^^o

Possibly Catalina is not the issue. On my network there is a managed, externally powered switch before the router. For me it would be possible to connect the the router with wifi but not ethernet if there was a problem with the switch. I would be able to connect to my NAS, and Apple TV. Although my Apple TV would not be able to connect to the internet since its hardwired.

Mike

I've had the same issues "Apple Support" fixed it with various power off's and on in different modes, then about a week or so later I hit another problem with the Internet being very very slow I'm connected however it keeps looping round from WiFi: looking for Networks... to WiFi On. I've been told by Apple support that my Broadband supplier Sky need to give me a WPA2 connection (improved security) I was (a long time) on the phone to Sky technical who know nothing about this.. I'm going to try Sky again tonight.

That worked for me too. Once I turned off netbarrier the internet connected fine. Bootup takes longer than usual since the upgrade. Thanks for the fix.

Apply the Intego update. This will fix the browsing speed consideable.

Jerker

I upgraded two iMacs here, both have the same issue. Not only the internet but local connections as well. I cannot connect to the admin page on either my router or NAS units. I didn't update my laptop so I'm able to access the internet with it.

Upgraded to 10.15.1, wish I hadn't bothered. 2019 iMac won't cleanly shut down/restart - hangs and then eventually reports a problem. Browsing via Safari extremely slow.

Worse than Microsoft, and that's saying something.