Question :

I have OSX 10.8 Mountain Lion with Safari 6, but when I try to log in on iCloud.com, I get a message saying “Your browser is not supported. To use iCloud, we recommend using the latest version of Safari, Firefox, or Internet Explorer.”

The error on iCloud.com is the worst, but I also get reminders on other sites like Facebook and ANWB.nl that my browser isn’t recent enough, and I should update…

I can’t upgrade as I am already on the latest version of Safari.

I’ve tried switching the User Agent under the Develop chapter in Safari’s menu bar, but whatever I try, when I restart Safari, it automatically defaults back to a custom User Agent string that reads :

Mozilla/4.0 (compatible- MSIE 6.0- Windows NT 5.1- SV1- .NET CLR 1.1.4322

What can I do ? this is getting on my nerves…

Answer :

the solution is rather straight forward : delete all plist-files associated with Safari manually

here’s how to do so :

– in the Finder, in the upper menu bar go to “Go”

– then “Go to folder…”

– in the popup window type “~/library/preferences”

(that’s how you get into the hidden Library-folder)

– then drag these files to the Desktop (you might not have all of them on you Mac) :

com.apple.Safari.plist

com.apple.Safari.plist.ByIRcYZ

com.apple.Safari.plist.lockfile

com.apple.Safari.plist.RRS.plist

com.apple.Safari.plist.RSS.plist.lockfile

– then restart Safari and check if everything works as you would like it to

– if so, drag those .plist-files you just moved to the Desktop to the Trash

…that’s it

FYI : theoretically you could also have replaced the custom User Agent string by the proper one for Safari 6 :

Mozilla/5.0 (iPad; CPU OS 6_0 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Version/6.0 Mobile/10A5355d Safari/8536.25

…too bad that your Safari will probably not be able to save that though, so you’ll still have to follow the directions outlined above…

more User Agent strings can be found here :

http://www.useragentstring.com/_uas_Safari_version_.php