Please help: Upgraded to Sierra and now can't connect to internet

[Herdfan]

I bought my daughter a new iPhone 7 for Christmas. She had already backed up her old 5S on her MBP 8,1. When we got home, she plugged in the new 7 and went to restore, but it would not work with version of iTunes she had. So she upgraded to the newest listed and tried again, but no go. She needed an even newer version which meant she needed to upgrade from Mountain Lion. So I took over and upgraded her to Sierra. Everything went smoothly except it will not connect to the internet.

At first I thought it was a WiFi issue as that is what my first searches revealed, but after trying all their suggestions I still couldn't connect to the internet. So I tried printing to a WiFi printer and that worked, so it was connected to WiFi. I tried pinging from Terminal with both IP and names and both worked. So the computer is connected to the internet, I just can't browse.

Just for fun I opened the Airport Utility and this is where it got strange. I am connected to WiFi via a Time Capsule. When you click on the WiFi in the taskbar, it will show being connected to Time Capsule. But if I open the Airport Utility all it shows is Internet. I have a Time Capsule and 2 Expresses on my network, but the AU shows none of them. It does on my iMac and it is connected to the internet just fine. Otherwise I would have been able to post this.

I also tried a wired connection and it didn't allow me to connect.

Any suggestions short of using my TM backup to go back to ML?

Thanks and hope everyone has a great Christmas.

 

[Zazoh]

Sounds like a DNS problem, if you have internet connectivity but no browsing.

Regardless, delete the Wifi from Network Preferences and try again.

Click the WiFi symbol | Open Network Preferences | WiFi |
Click on Advanced
You will see your WiFi connection options, delete the one for Time Capsule and any others you have in your home. Then When they pop back up, choose the correct one that actually has a connection to the Internet.

 

[Herdfan]

Sounds like a DNS problem, if you have internet connectivity but no browsing.

I thought that first as well. But one of the "fixes" was to use the Google DNS servers at 8.8.8.8 & 8.8.8.4 and that didn't work. Also I can ping Google via the terminal with both 74.125.29.105 & www.google.com. So some DNS is working somewhere.

But I can't access Google via 74.125.29.105 so that should rule out a DNS issue.

Thanks for trying.

Edit: Have tried with both Safari and Chrome.

 

[aquilc]

Try resetting the modem... Or clearing all WiFi settings + preferences.

Also try logging in with a guest account.

 

[Herdfan]

Try resetting the modem... Or clearing all WiFi settings + preferences.

Did all that. Cleared many of the .plist's and restarted, didn't work. Reset Time Capsule & Modem, no help.

Also try logging in with a guest account.

Will try that when I get back home. Thanks.

 

[997440]

Try running the OS Wireless Diagnostics Utility to see if any report results hold a clue -- https://support.apple.com/en-us/HT202663

Try booting into Safe Mode, then reboot into normal mode -- https://support.apple.com/en-us/HT201262

[...]

• Verifies your startup disk and attempts to repair directory issues, if needed
• Loads only required kernel extensions
• Prevents Startup Items and Login Items from opening automatically
• Disables user-installed fonts
• Deletes font caches, kernel cache, and other system cache files

[...]