Hi Bill, Yes, when you do an upgrade In-Place preference files are sometimes not updated, (hence your really out of date prefs files). Some can be corrupted causing issues in the new upgraded OS. I would say you haven't done a Clean Install for quite a number of years! 2001 wow ;-)
A Clean Install of a new version of OS X is a good idea, it clears out all the old 'junk' of years of previous OS updates and Transfer & Setup migration to newer Macs. A clean install does involve more work but you know you won't have any problems after a clean install. Cheers, Ronni Sent from Ronni's iPad4 > On 13 Feb 2015, at 12:46 pm, Bill Parker <[email protected]> wrote: > > Thansk Ronni. > > > I deleted the files you specified. The com.apple.airport.preferences.plist > was dated 2008! All working again. > > So I'll watch and wait. I noticed quite a few plist files with dates going > back to 2001. > > Thanks. > > Bill >> On 13/02/2015 10:31, Ronni Brown wrote: >> Hi Bill, >> >> What have you tried to rectify the Wi-Fi issue? >> >> I have not experienced any Wi-Fi issues after upgrading to Yosemite. I’ve >> had a few clients that did experience Wi-Fi issues after doing an In-Place >> Upgrade (not a Clean Installation). I was able to fix their Wi-Fi problems >> with some fairly simple troubleshooting. >> >> Manually trashing the Network plist files should be your first line of >> troubleshooting. >> This is one of those tricks that consistently resolves even the most >> stubborn wireless problems on Macs of nearly any OS X version. >> This is particularly effective for Macs who updated to Yosemite that may >> have a corrupt or dysfunctional preference file mucking things up. >> >> Remove Network Configuration & Preference Files >> >> 1. Turn Off Wi-Fi from the Wireless menu item >> >> 2. From the OS X Finder, hit Command+Shift+G and enter the following path: >> /Library/Preferences/SystemConfiguration/ >> >> 3. Within this folder locate and select the following files: >> com.apple.airport.preferences.plist >> com.apple.network.identification.plist com.apple.wifi.message-tracer.plist >> NetworkInterfaces.plist >> preferences.plist >> >> 4. Move all of these files into a folder on your Desktop called ‘wifi >> backups’ or something similar – we’re backing these up just in case you >> break something but if you regularly backup your Mac you can just delete the >> files instead since you could restore from Time Machine if need be. >> >> 5. Reboot the Mac >> >> 6. Turn ON WI-Fi from the wireless network menu again >> >> This forces OS X to recreate all network configuration files. This alone may >> resolve your problems, but if you’re continuing to have trouble there are >> other steps you can do to resolve wireless problems. >> >> Post back with details what you have tried before I suggest any other steps >> to take. >> >> Cheers, >> Ronni >> >> 17" MacBook Pro 2.3GHz Quad-Core i7 “Thunderbolt" >> 2.3GHz / 8GB / 750GB @ 7200rpm HD >> >> OS X Yosemite 10.10.1 >> Windows 7 Ultimate (under sufferance) >> >> >>> On 13 Feb 2015, at 7:23 am, Bill Parker <[email protected]> wrote: >>> >>> Wamugers, >>> >>> Yosemite 10.10.1 had the habit of closing down WiFi after "sleep". >>> >>> 10.10.2 was said to fix that. For me it has not. It doesn't happen as >>> often but still there! >>> >>> >>> MacBook Pro 13" mid 2010 10GB RAM >>> Bill
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