MacBook Pro cannot connect to internet over one specific network

[Annalogs]

Hi all,
first time poster as I have tried so many things and still can’t fix this! Hoping someone can help.
new MacBook Pro was running perfectly on my home network, then suddenly stopped being able to reach the internet on the same network. All other devices on the network connecting and working fine except this MacBook. MacBook connects to all other networks without issue. Ishop says they cannot help as MacBook connects to all other networks no problem.

things I have tried:
resetting router and modem
removing wifi and network settings and adding again
resetting pram
restarting MacBook
adjusting DNS settings/renewing license

thank you to anyone out there with advice!!

 

[Ruggy]

Can it actually detect the network and then isn't capable of connecting to it or is the network invisible?
If it's invisible, is there anything connected to the Macbook including mouse and external keyboard, and if so try disconnecting everything and trying again.
Obviously, you've tried moving the machine but you could also try with ethernet. You'd need a dongle to try this but they are only about $10
Does it manage to download mail from the same network or not?
Have you run 'connection doctor' which is to be found in 'Mail' > 'Window' list from the toolbar.

 

[Annalogs]

Can it actually detect the network and then isn't capable of connecting to it or is the network invisible?
If it's invisible, is there anything connected to the Macbook including mouse and external keyboard, and if so try disconnecting everything and trying again.
Obviously, you've tried moving the machine but you could also try with ethernet. You'd need a dongle to try this but they are only about $10
Does it manage to download mail from the same network or not?
Have you run 'connection doctor' which is to be found in 'Mail' > 'Window' list from the toolbar.

It detects the network and often says “connected with the IP address ****” but can’t actually get on the internet.. cannot receive mail either.. there is nothing connected to it externally

 

[Fishrrman]

This is "a shot in the dark"... may not help at all, but is simple to try and will "hurt nothing".

Have you tried creating a NEW user account?
And then see if the new account can get on the network, even if your "regular account" cannot...?

Go to users and groups pref pane.
Click the lock, enter your [regular account] password.
Click the "+", then create the new account.
BE SURE to give it administrative privileges.
Give it a simple name (such as "temp" for the username and "temp" for the password).
Then, log out of the regular account and into the new one.

IF the new account can connect to the network, and the regular one cannot, then it's probably something "localized" to the regular account. Tracking stuff like this down can be ... well... difficult.

If the new account still can't connect, you can just log back into your regular account and delete the temp account if you wish. Nothing else should have been disturbed.

I always keep a "second user account" available for things like this.
Even though I seldom actually use it... it's "there" if needed...

 

[Annalogs]

This is "a shot in the dark"... may not help at all, but is simple to try and will "hurt nothing".

Have you tried creating a NEW user account?
And then see if the new account can get on the network, even if your "regular account" cannot...?

Go to users and groups pref pane.
Click the lock, enter your [regular account] password.
Click the "+", then create the new account.
BE SURE to give it administrative privileges.
Give it a simple name (such as "temp" for the username and "temp" for the password).
Then, log out of the regular account and into the new one.

IF the new account can connect to the network, and the regular one cannot, then it's probably something "localized" to the regular account. Tracking stuff like this down can be ... well... difficult.

If the new account still can't connect, you can just log back into your regular account and delete the temp account if you wish. Nothing else should have been disturbed.

I always keep a "second user account" available for things like this.
Even though I seldom actually use it... it's "there" if needed...

Thanks… Tried this! Nope admin account same problem ?

 

[philosoraptor1]

Is the IP assigned using DHCP? Is there possibly already a device on your network using the same address?

 

[Annalogs]

Is the IP assigned using DHCP? Is there possibly already a device on your network using the same address?

Thanks for the reply.
It’s on Using DHCP and set to configure IP automatically
..how would I know if there is a device using the same address?

 

[svenmany]

It detects the network and often says “connected with the IP address ****” but can’t actually get on the internet.. cannot receive mail either.. there is nothing connected to it externally

What address is listed there?

Can you just ping 1.1.1.1 from terminal? If you can that would point to to a dns issue.

 

[Ruggy]

Yes, it could be that it's using a self assigned IP address.
One easy way to check is to see what the other devices use as an address and it should be something similar.
Typically they'll be something like 192.168.0. and then a number that begins with 10 as usually your router will start to assign numbers from 10.
If the ip address this machine is assigned to is obviously different (like starting with 72 for instance) then it's time to have a look in the router interface. (which is usually 192.168.0.1)
Looking in the router interface is a good idea in any case.


You've reset your router and also tried 'forget this network' on the Pro but have you tried 'forget this network' then resetting the router, then trying to log in again?
I had a situation once where that was the only thing which worked. Apple had been contacted and couldn't help but the problem was the ip address assigned for some reason also corresponded to an old device and this was the only workflow which solved the problem.
Good luck.

 

[happyslayer]

Two more possible things to look at. Have you tried setting the IP manually? If so, have you put in a different DNS server? I often use 8.8.8.8 (Google DNS) as a secondary. And have you tried an IP scanner app to see if it can see other devices on the network even if it can't surf the web? I use Angry IP Scanner on my Mac, it's free and works okay. If it does find other devices, then the local network is fine and it's still some kind of DNS issue. Good luck.

 

[LinkRS]

Hi all,
first time poster as I have tried so many things and still can’t fix this! Hoping someone can help.
new MacBook Pro was running perfectly on my home network, then suddenly stopped being able to reach the internet on the same network. All other devices on the network connecting and working fine except this MacBook. MacBook connects to all other networks without issue. Ishop says they cannot help as MacBook connects to all other networks no problem.

things I have tried:
resetting router and modem
removing wifi and network settings and adding again
resetting pram
restarting MacBook
adjusting DNS settings/renewing license

thank you to anyone out there with advice!!

Howdy Annalogs,

I have had spurious issues with a few Apple devices over the years, that seem like what you are describing. The WiFi adapter in the device is connected to the network (in my case my Router), and has a strong signal, but no matter what I do, it seems to drop 100% of the network packets. Other devices on the network (most are not Apple), have no problem. Restarting the Apple device tends to not solve it, and restarting my router does. I first noticed this on my iPhone (I believe it was an iPhone 6 Plus), and most recently saw it on my 2019 16" MacBook Pro. The things that worked for me have been restarting the wireless router, switching to a different WiFi network (I have 3 at my house, one 2.4 GHZ, and two 5 GHz available on my router), resetting Network settings on the Apple Device, and most recently switching brand of Wireless router. Up until last Fall, I have been using Netgear routers, and I swapped it to an Asus model. Since the swap, I have only seen this Internet drop issue once. The router has had a few updates since then, so I am not sure if that solved the issue, but it hasn't resurfaced for a while. Before I switched routers, usually any one of the above options fixed the issue. I didn't have to them all at once. Easiest for me was switching to a different WiFi network. When it happened again, I would just switch again, cycling through them. Good luck, and hope this helps

Rich S.

 

[CopyCatz]

Since it's your newest device it might be that your dhcp range is full and cannot hand out a free IP address anymore.