Cannot connect to internet

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Yanchen1007 Author

Level 1

4 points

Cannot connect to internet

My mac could not open any website when it shows it already connect to wifi

MacBook Pro 13″, macOS 12.0

Posted on Nov 28, 2021 9:44 PM

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Answer 1

Top-ranking reply

TheLittles

Level 10

196,353 points

Nov 28, 2021 9:55 PM in response to Yanchen1007

Yanchen1007 Said:

"Cannot connect to internet: My mac could not open any website when it shows it already connect to wifi"

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Troubleshooting Mac Wi-Fi:

A few thoughts to try...

I. Clear the Temporary Internet Files:

Cookies perform remembrance of certain site-entered data.
Cache keeps a snapshot of the last time you visited a site.
Go Here: Clear your browsing history in Safari on Mac - Apple Support

II. Restart your Router:

Power: off the router
Wait: 30 seconds
Power: It back on

III. Boot in Safe Mode:

[Hold Down: shift key, upon boot], In Safe Mode, Login Items do not run at login, certain preferences are set aside, and damaged system files are then reset. So, once booted in to Safe Mode, wait 30 seconds, and then boot up normally, attempting another update install.

IV. Try a New Admin User:

What happens when you create a new administrator user, and log into it? Do you still get this error? If not, then it is likely an error with the current user. If so, then it is likely an error with your Mac.

V. Reset your SMC and your NVRAM:

(Applies to Intel-Basel Macs Only) Sometimes changes (i.e. Installations) are made to the system and then settings (i.e. Networking) become corrupted, technically. So, reset both on your Mac. So, reset the SMC and reset the NVRAM or PRAM. It might take three tries. to fix this. So, be certain you have the time to do so.

Start With This:

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Answer 2

BDAqua

Level 10

245,573 points

Nov 29, 2021 10:23 AM in response to Yanchen1007

Make a New Location, Using network locations in Mac OS X ...

System Preferences>Network, top of window>Locations>Edit Locations, little plus icon, give it a name.

System Preferences>Network, click on the little gear at the bottom next to the + & - icons, (unlock lock first if locked), choose Set Service Order.

The interface that connects to the Internet should be dragged to the top of the list.

Sys Prefs>Network>highlight the Interface you're using>Advanced>TCP/IP>Configure IPv4: Using DHCP.

If using Wifi, instead of joining your Network from the list, click the WiFi icon at the top, and click join other network. Fill in everything as needed.

System Preferences>Network>choose interface>Advanced>Proxies Tab, make sure none are set, like for HTTP & HTTPS.

System Preferences>Network, unlock the lock if need be, highlight the Interface you use to connect to Internet, click on the advanced button, click on the DNS tab, click on the little plus icon, then add these numbers...

8.8.8.8

8.8.4.4

1.1.1.1

9.9.9.9

Apply.

Go on the Apple certificate page:

https://www.apple.com/certificateauthority/

Download the Apple Intermediate Certificates

Apple IST CA 2 - G1 Certificate (direct download)

Double click the downloaded certificate to install it in Keychain Access.

You should see it now, in login certificates.

https://discussions.apple.com/thread/251211674?answerId=253087027022&page=1