(Updated on 11/6/2017)So, here’s a quick question: how long does it take for your Mac to start up? A minute? Two minutes? Five? Or just too long? One possible reason your Mac may be slow out of the blocks is that it’s trying to launch a slew of programs all at the same time.
By default, at startup The Mac opens those applications that were open when it was shut down or restarted. This feature is designed to help users with ease of access and recover or continue with whatever they were doing by quickly reloading the apps that were loaded before the system rebooted or crashed. Even though I have the box saying 'Reopen windows when logging back in' unchecked (it shows up prior to shutdown), nothing checked under my login items under 'users and groups', and the 'close windows when quitting applications' box checked in 'general settings', word, excel, powerpoint, safari. How to Stop an Application from Opening at Startup With Mac OS X. This wikiHow teaches you how to prevent a startup application from running on your Mac. Open the Apple Menu. Click the black Apple icon in the upper-left corner of the. Mac service and repair. Learn about AppleCare+ and the Apple limited warranty coverage, start a service request for your Mac, and find out how to prepare your Mac for service. Reapply the last Mac OS X Combo Update corresponding to the version of Mac OS X you are using. This will pick up any changes related to this application which were made since the application was originally published on the Mac OS X Install Discs. Other software problems or conflicts. Console can often provide for clues for additional.
Now, some of these programs might be actually be ones that you do want to launch automatically, such as the Safari web browser, or Apple Mail. But other, not-so-necessary programs may be piling up in your Mac’s “login items” list, too—ones that set themselves to launch automatically without asking first.
Another factor that may be slowing down your system is the Mac’s “Resume” feature, which re-opens any and all apps you had running when you shut down your Mac. That could lead to a crush of apps all trying to launch themselves at startup.
Last but not least, you may have specific programs on your Mac with “Launch at Startup” settings that you’ll need to find and disable.
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Now, if you’re the patient type, waiting a little longer for your Mac to boot up so that your programs appear just as you left them might be a fair trade-off.
But if you’d rather shave a few seconds—or even minutes—off the time it takes for your Mac to settle down after hitting the power button, read on.
1. Cross items off your Mac’s “Login Items” list
Your Mac launches a series of programs each and every time it starts up. Some of these programs are critical for the smooth operation of your system; others, not so much.
To see a list of all the programs your Mac opens automatically, click the Apple menu in the top-left corner of the screen, select System Preferences, click the “User & Groups” icon (it’s under the “System” heading), pick a user (you, most likely), and finally click the “Login Items” tab.
You should now see a list of everything your Mac is launching (or trying to launch, anyway) whenever it starts up.
Some of the items will be easy to identify—in my case, I’ve got Dropbox and Google Drive (the handy file-sharing apps) listed, as well as something called an “Eye-Fi Helper” (an app that lets my Mac receive wireless images from my digital camera) and “AirPort Base Station Agent” (which keeps tabs on my AirPort Wi-Fi base station).
To delete these or other startup items from the list (but not from your Mac, mind you), just select them and click the “-” button at the bottom of the list.
2. Keep “Resume” from re-launching previously open apps
Don’t get me wrong—”Resume” is one of the handiest Mac features, especially for those of us who like to pick up in Safari or the Calendar app right where we left off.
But if you don’t want Resume relentlessly re-launching all the apps you had open when you last shut down your Mac, you can stop it from doing so.
The next time you select Shut Down or Restart from the Apple menu, take a closer look at the window that pops up; in addition to the “Cancel” and “Shut Down” or “Restart” buttons, you’ll also see a checkbox labeled “Reopen windows when logging back in.”
Click the box to clear out the checkmark, and the only apps that’ll re-launch the next time your power on your Mac are those listed in the Login Items menu.
3. Check for program-specific “Launch at Startup” settings
So, you emptied the “Login Items” list and turned off the Resume feature, but there’s still a program that’s launching itself at startup. What gives? Well, it could be that the stubborn program has its own “Launch at Startup” setting.
Open the program, make sure it’s the active app on your desktop (just click its window if it isn’t), then find its Preferences menu; generally speaking, you’ll find it under its main menu in the Mac menu bar (like “Spotify” in the case of Spotify).
Once you’ve opened the program’s Preferences menu, look around for a “Launch at Startup” setting. If there are lots of different Preferences categories, start with “General,” then try “Advanced.” (In Spotify’s case, I found a “Open Spotify automatically after you log into the computer” setting under its “Advanced” settings.)
Found the “Launch at Startup” (or the equivalent) setting? Go ahead and disable it, then rinse and repeat for any other programs that are still launching themselves when you turn on your Mac.
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