Why does Safari close each night, overnight?

Automatic and Sudden Termination of Apps

Automatic app termination manages the life cycle of apps behind the scenes, terminating apps that are not being used and allowing the reclamation of resources such as memory. With this feature, users no longer need to explicitly quit apps (although they still can, if they want to). Instead, the operating system is responsible for managing app processes with the goal of ensuring optimal system performance.

Mac Technology Overview: Cocoa Application Layer

It may be possible to stop automatic termination for some apps, but I don't know how. There's no reason to do it unless one is a developer.

Okay, I am having the same problem. Unfortunately, the response was not helpful. I don't want Safari to close out. I keep several windows open periodically as reminders of what I need to do the next day. This is VERY frustrating. I need to it stop closing automatically. Apple, why is this happening?

I experience this issue as well, but once I reopen Safari in the morning, all of my windows ands tabs open as I left them the night before.

The overnight Safari closure isn't really a problem. It's just odd.

I wish that were the case. As soon as I click on Safari, it brings up only the home page. This just started about a week ago. I haven't ever had this problem in the past.

From the menu bar, select

 ▹ System Preferences... ▹ General

and uncheck the box marked

Close windows when quitting an application

Thank you! I unclicked it. We shall see what happens tonight!

Under the History pull-down, choose "Reopen All Windows from Last Session" when you restart Safari. Safari is a huge memory hog especially with a lot of windows and tabs open. I found that quitting and restarting Safari in this way often increased performance on an old MBP.

I am running Mountain Lion. I have my computer set to not go to sleep, but every night Safari and Chrome quit. The box "Close windows when quitting an application" is not checked.

You may have installed the "Genieo" or "InstallMac" ad-injection malware. Follow the instructions on this Apple Support page to remove it.

Back up all data before making any changes.

Besides the files listed in the linked support article, you may also need to remove this file in the same way:

~/Library/LaunchAgents/com.genieo.completer.ltvbit.plist

If there are other items with a name that includes "Genieo" or "genieo" alongside any of those you find, remove them as well.

One of the steps in the article is to remove malicious Safari extensions. Do the equivalent in the Chrome and Firefox browsers, if you use either of those.

After removing the malware, remember to reset your home page in all the web browsers affected, if it was changed.

If you don't find any of the files or extensions listed, or if removing them doesn't stop the ad injection, then you may have one of the other kinds of adware covered by the support article. Follow the rest of the instructions in the article.

Make sure you don't repeat the mistake that led you to install the malware. Chances are you got it from an Internet cesspit such as "Softonic" or "CNET Download." Never visit either of those sites again. You might also have downloaded it from an ad in a page on some other site. The ad would probably have included a large green button labeled "Download" or "Download Now" in white letters. The button is designed to confuse people who intend to download something else on the same page. If you ever download a file that isn't obviously what you expected, delete it immediately.

In the Security & Privacy pane of System Preferences, select the General tab. The radio button marked Anywhere should not be selected. If it is, click the lock icon to unlock the settings, then select one of the other buttons. After that, don't ignore a warning that you are about to run or install an application from an unknown developer.

Still in System Preferences, open the App Store or Software Update pane and check the box marked

Install system data files and security updates (OS X 10.10 or later)

or

Download updates automatically (OS X 10.9 or earlier)

if it's not already checked.

Dear Linc Davis,

I went to the Apple Support Page and found several files with "genieo" in their name. After removing them and restarting, I no longer have that problem! The problem appeared after I visited the website of Oregon Scientific and tried to download some instructions for one of their weather stations. Instead I received something called FreeRAR which I had to remove.

Thanks very much!

Donald G.

<Edited By Host>

Linc Davis,

How can I disable OS X from shutting down a certain application regardless of how much memory its consuming and how inefficient OS X thinks it is ? There has to be a variable to force a certain application not to shutdown automatically by the OS ?

Thanks

PJ