About the OS X Mountain Lion v10.8.5 Update

The OS X Mountain Lion v10.8.5 Update is recommended for all OS X Mountain Lion users.

You should back up your system before installation. To do this you can use Time Machine.Do not interrupt the installation process once you have started to update your system.You may experience unexpected results if you have third-party system software modi?cations installed, or if you've modi?ed the operating system through other means.Choose Apple menu (?) > Software Update to check for the latest Apple software via the Mac App Store, including this update.Other software updates available for your computer may appear, which you should install. Note that an update's size may vary from computer to computer when installed using Software Update. Also, some updates must be installed prior to others.

You can also download the manual update installer. This is a useful option when you need to update multiple computers but only want to download the update once. These versions of the standalone installers are available from Apple Support Downloads. 

The OS X Mountain Lion v10.8.5 Update is recommended for all OS X Mountain Lion users. It improves the stability, compatibility, and security of your Mac. This update:

Fixes an issue that may prevent Mail from displaying messagesImproves AFP file transfer performance over 802.11ac Wi-FiResolves an issue that may prevent a screen saver from starting automaticallyImproves Xsan reliabilityImproves reliability when transferring large files over EthernetImproves performance when authenticating to an Open Directory serverAddresses an issue that prevented a smart card from unlocking preference panes in System PreferencesContains the improvements included in MacBook Air (Mid 2013) Software Update 1.0 $('articlecontent').select('img').each(function(element) { if(element.width > 640 ){ var imageDiv = document.createElement('div'); imageDiv.setStyle({ 'display':'block', 'width':'660px', 'overflow':'auto', 'border':'1px solid #dedede','margin-right': '15px'}); element.parentNode.replaceChild(imageDiv, element); imageDiv.appendChild(element); } }); $('articlecontent').select('table').each(function(element) { if(element.width > 660 || element.offsetWidth>660){ var tableDiv = document.createElement('div'); tableDiv.setAttribute("class","kbtablecontainer"); element.setAttribute("style","margin-bottom:0px !important"); element.parentNode.replaceChild(tableDiv, element); tableDiv.appendChild(element); } }); Important: Information about products not manufactured by Apple is provided for information purposes only and does not constitute Apple’s recommendation or endorsement. Please contact the vendor for additional information.79% of people found this helpful. var rel_discussions_loaded = false; var rel_articles_loaded = false; Event.observe(window, 'load', function() { new KmLoader('2', 0, 0, 'About the OS X Mountain Lion v10.8.5 Update', 0, 0, 'en_US', 8, 'true', 'support_site.related_discussions.HT5815'); rel_discussions_loaded = true; }); Event.observe(window, 'load', function() { new KmLoader('1', 'HOWTO_ARTICLES,TROUBLESHOOTING_ARTICLES,PRODUCT_HELP' , 0, 'About the OS X Mountain Lion v10.8.5 Update', 0, 0, 'en_US',8, 'true', 'support_site.related_articles.HT5815',undefined,undefined,'HT5815');rel_articles_loaded=true; });Event.observe(window, 'load', function() { setTimeout(function(){ if(rel_discussions_loaded === true || rel_articles_loaded === true) { ACUtil.hideAndBorderAdditionalRelatedThumbNails(); } },2500);});

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