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After installing El Capitan on previously perfect MacBookPro (2012) running Yosemite I now have no internet access - using either Wi-Fi or ethernet (despite indicators saying I have access!). I have already deleted Safari Caches etc, have no Safari extensions running and no antivirus software running.
Has anyone else had this issue and can offer some updated advice?
MacBook Pro, OS X El Capitan (10.11)
Internet – can’t connect - Yosemite
Internet – can’t connect - Yosemite (2)
What does Wireless Diagnostics show?
Wi-Fi Problems in OS X Yosemite
Wi-Fi Problems in OS X Yosemite (2)
Wi-Fi Problems in OS X Yosemite (3)
WiFi Potential Temporary fix - Yosemite
Also try turning off Bluetooth.
WIFI AND BLUETOOTH FINALLY SOLVED, NO REALLY - YOSEMITE 10.10
If your Wi-Fi source is capable of generating a 5 GHz Wi-Fi network, try that to help avoid conflicts with Bluetooth.
Please read this whole message before doing anything.
This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
The purpose of the test is to determine whether the problem is caused by third-party software that loads automatically at startup or login, by a peripheral device, by a font conflict, or by corruption of the file system or of certain system caches.
Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards, if applicable. Start up in safe mode and log in to the account with the problem.
Note: If FileVault is enabled in OS X 10.9 or earlier, or if a firmware password is set, or if the startup volume is a software RAID, you can’t do this. Ask for further instructions.
Safe mode is much slower to start up and run than normal, with limited graphics performance, and some things won’t work at all, including sound output and Wi-Fi on certain models. The next normal startup may also be somewhat slow.
The login screen appears even if you usually login automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
Test while in safe mode. Same problem?
After testing, restart as usual (not in safe mode) and verify that you still have the problem. Post the results of the test.
NSPOSIXError Domain:1 after El Capitan install
