Installing Software That Security Doesn't Recognize Mac Sierra

10.09.2020by

May 20, 2017  Support Communities / Mac OS & System Software / macOS Sierra Looks like no one’s replied in a while. To start the conversation again, simply ask a new question. Bridge CC Photo Downloader doesn't recognize my camera on Mac OS Sierra. My camera is a Canon EOS 20D, and I connect it via USB. Is it possible to fix this? One of the major changes in the macOS Sierra Public Beta isn’t an obvious one, and you may not encounter it until you try to install an app that you didn’t buy from the App Store. The answer to your installation woes is that your computer doesn’t know what the dongle is. Especially if you are installing the embroidery software on a computer that is newer than that of the embroidery software’s system requirements, the information the computer. Open a Mac app from an unidentified developer. If you try to open an app that isn’t registered with Apple by an identified developer, you get a warning dialog. This doesn’t necessarily mean that something’s wrong with the app. For example, some apps were written before developer ID registration began.

MacOS High Sierra Won't Start. The Mac won't start problem has been occurred on Mac OS X El Capitan and macOS Sierra as well before. If your Mac fail to boot after you have upgraded to High Sierra, you can take some actions like what you did for the former Mac OS updating problems. Hold down Command, Option, P and R, which will reset the NVRAM.

Summary

Mac fails to boot or start after the macOS update. Whatever is preventing your Mac from starting up, follow these 5 simple solutions to get it working again. If you have data loss problem after macOS update, EaseUS Data Recovery Wizard for Mac provides tried-and-true data recovery service to you.

This page covers 5 fixes for Mac won't boot or start issue after macOS Catalina, Sierra or older macOS update issue. If you are with this issue, follow to make your Mac computer work now:

Workable SolutionsStep-by-step Troubleshooting
Fix 1. Fix PRAM/NVRAMRestart Mac > Hold Command+Option+P+R keys to turn on Mac..Full steps
Fix 2. Reset SMCShut down Mac > Unplug all cables > Plug in cables back after a few minutes..Full steps
Fix 3. Boot in Safe ModeStart Mac > Hold 'Shift' until the login window appears > Release the key when login in window appears..Full steps
Fix 4. Run Disk UtilityTurn of Mac > Hold Command + R keys and power Mac back up > Enter recovery mode..Full steps
Fix 5. Reinstall macOSDownload macOS Catalina, Mojave, or Sierra > Create bootable USB > Clean install macOS..Full steps

macOS has now been updated to 10.15, and many Mac users are trying to upgrade to the newest version. While for most it’s a usual pleasurable experience, for some this update had downsides. Some users complain that their Mac computers won't boot after installing new macOS Catalina. When Mac fails, it usually can't boot or start up properly. If you are faced with this situation, the most important thing should be recovering data from the unbootable Mac because:

  • Your attempts to fix the Mac not booting issue may write new data on this Mac, which will overwrite the old data and make it irrecoverable.
  • Recovering data before the complex fixes can avoid data loss.

EaseUS Mac data recovery software is able to recover data from unbootable Macs after update. It creates a bootable media that enables you to recover data from Mac hard drive (If you only have one Mac). What's more, it recovers data from failed internal Mac hard drive, APFS boot drive, and unmountable APFS boot volume, etc. If you have two Mac devices, take out the hard drive and connect it to the other Mac. Download EaseUS Data Recovery Wizard for Mac on that Mac device, and recover data from the hard drive.

Then, you can read on and Fix the 'Mac won't boot after update' issue after you have successfully got data from the drive.

1. Reset the PRAM / NVRAM

NVRAM refers to special memory sections on your Mac that store data that persists even when the Mac is shut off, such as volume settings and screen resolution. Resetting that data isn't harmful! In some cases, after performing this step, your Mac will restart normally.

  • Restart your Mac
  • Hold down all of these keys: 'Command', 'Option', 'P' and 'R', and turn on the Mac. (It's the same keys to reset the PRAM).
  • Keep holding the keys down until you hear the Mac restart again.

You may see a progress bar on startup. If the progress bar fills up and then the Mac starts up, you're probably good to go. If not, reset SMC.

2. Reset the SMC

In some situations, you may need to reset your Mac's SMC (System Management Controller).

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  • Shut the Mac down.
  • Unplug all cables.
  • Wait for a few minutes.
  • Plug the cables back in and start up the Mac.

If you've got a Mac desktop, unplug it for 15 seconds and then plug it in and after five seconds press the power button.

3. Boot Mac in Safe Mode

Safe Mode is a stripped-down version of the Mac operating system that can be useful if you are trying to troubleshoot issues with your Mac.

  • Start your Mac, press and hold the 'Shift' key, and make sure your Mac has at least 9 GB of free space.
  • When the login window appears to release the shift key and log in. You may be required to log in twice if you have FileVault turned on. Then restart the device.

Wait patiently till Mac computer finish the reboot process.

4. Run Disk Utility in Recovery Mode

If your Mac is booting but the operating system isn't loading up, you may have a corrupted drive. Luckily it is possible to fix this in Recovery Mode. In Recovery Mode you can restore from a Time Machine backup, use Disk Utility to verify and repair connected drives, check your internet connection, get help online using Safari, and install or reinstall macOS.

  • Make sure the Mac is off. If it's stuck on a grey, blue or white screen, just hold down Mac's power button for several seconds until it shuts off.
  • Hold down the 'Command' and 'R' keys, and power the Mac back up again. Keep pressing 'Cmd' + 'R' while your Mac is booting up.
  • Once your Mac starts in Recovery Mode you can have access to 'Utilities'. Click 'Disk Utility', locate the icon for your Mac's drive, and click 'Verify Disk'.

5. Reinstall macOS Catalina/Sierra

The last method to fix macOS Catalina or Sierra fails to boot after update error is to reinstall macOS.

  • You can download wanted macOS Catalina/Sierra and create a bootable USB drive to clean install macOS Catalina/Sierra on your computer again.
  • You can also boot into Recovery mode (Solution 4), and then click to install the latest OS and follow the onscreen prompts. Our article on resetting a Mac to factory settings has more information on reinstalling macOS.

If your Mac does not respond after trying these tips, contact Apple Support or a certified Apple Repair Center. It’s likely there is a problem with your logic board or other internal hardware.

It’s almost become a tradition; one that we wish we didn’t have to put up with. It seems with each new version of the Mac operating system, there are some features that just don’t seem to work the way they used to. The tradition lives on with macOS High Sierra, so we’re gathering a list of what High Sierra broke and how to fix it (when you can).

Drive Encryption Can Change Formatting
Encrypting an entire drive to add a level of security has been an easy task in the Mac OS ever since FileVault 2 was released as part of OS X Lion. Full disk encryption has been a boon for Mac users who worry about their personal data being easily accessible on their Macs or external drives. This is especially true for portable Mac users, who need to worry about their Macs being lost or stolen.

Installing Software That Security Doesn

macOS High Sierra continues to support full disk encryption, but Mike Bombich, who created Carbon Copy Cloner, has verified a bug in High Sierra that will cause an external drive to have its format changed from HFS+ to APFS when the drive is encrypted in High Sierra.

Enabling encryption on a drive should not alter the underlying drive format. If the drive was HFS+ (Hierarchical File System) before you chose to encrypt it, it should remain an HFS+ drive afterwards. The same is true for APFS (Apple File System) formatted drives; choosing the encryption option shouldn’t change the APFS format of the drive.

Related:A Note On High Sierra Compatibility with Third Party SSDs

(Encrypting an external drive can lead to the drive being converted to an APFS volume.)

Under certain conditions, encrypting a drive will modify the format to APFS without the user being aware of the changes.

The specific conditions are:

  • Must be an external drive
  • Must not have a Mac operating system installed on the drive

If these two conditions are met, and you select the option to encrypt the drive, by right-clicking the drive icon and selecting Encrypt from the popup menu, the drive will be converted to APFS format and then encrypted.

Even though the drive has been converted to APFS and encrypted, it will continue to work just fine with your Mac running macOS High Sierra. The problem comes about should you ever connect the drive to a Mac running an earlier version of the Mac operating system, or if you boot your Mac to an earlier version of the OS. In either case, the external drive won’t be recognizable by the older operating system.

Our recommendation is not to encrypt your external drive, unless converting to APFS is acceptable to you, and you have no plans to use the drive with earlier versions of the Mac operating system.

Being Logged Out Randomly
If you find yourself occasionally being logged out of your Mac after you upgraded to macOS High Sierra, you can stop worrying; your Mac isn’t possessed. Instead, the upgrade process may have enabled two security options that you may not have been using before.

(If you’re being logged out from time to time, it may be because the Log out option, shown above, has been set during the installation of macOS High Sierra.)

To correct the phantom logouts, launch System Preferences, either by clicking on its Dock icon, or by selecting System Preferences from the Apple menu.

In the System Preferences window, select the Security & Privacy preference pane.

From the Security & Privacy preference pane, click the Lock icon and enter your administrator credentials. Once the padlock is unlocked, click on the Advanced button.

Either remove the checkmark from “Log out after xx minutes of inactivity” or set the time frame to a longer period to meet your needs. Click the OK button when done.

The second security issue that may be causing the problem is also located in the Security & Privacy preference pane. Select the General tab.

The item: “Require password xx minutes after sleep or screen saver begins” may also be checked. You can remove the checkmark, or modify the amount of time that needs to pass before the screen saver kicks in to better fit your needs. My own preference is to leave this security feature in place, and just adjust the time as needed.

While you’re at it, you may want to jump over to the Desktop & Screen Saver preference pane to adjust the time for when the screen saver starts up.

(Be sure to check the General tab of the Security & Privacy preferences for password requirements to wake from sleep. These may have also been changed during the install.)

Select the Screen Saver tab, then use the Start after: dropdown menu to select how much inactive time needs to elapse before the screen saver starts

High Sierra Battery Life is Poor
Another issue that seems to be common is portable Mac battery life being adversely affected after an upgrade to High Sierra. So far, it seems that macOS High Sierra isn’t the culprit; instead, there are a few apps that may need to be updated to make better use of the battery.

Launch Activity Monitor, located at /Applications/ Utilities.

In the Activity Monitor window, select the Energy tab.

(Activity Monitor’s Energy tab can help you find apps gulping down the power from your battery.)

Installing Software That Security Doesn't Recognize Mac Sierra Vista

In the resulting display, look for apps that are marked as preventing sleep, or are listed as having a high energy impact. Contact the app developer to see if there are updates available for the app to make it perform better with macOS High Sierra.

Unable to Wake From Sleep
I’m not sure what it is about sleep, but the Mac seems to always have issues with sleep after a system upgrade. There have been reports of Macs not being able to wake from sleep after upgrading to High Sierra.

Unrelated, but with the same solution, is a flickering of the display, especially when the Safari browser is open.

You can fix both issues by resetting the NVRAM and then resetting the SMC.

You can find detailed instructions on how to perform these resets in the article:

How to Reset NVRAM, PRAM, SMC on your Mac.

Office 2011 Crashes
If you’re using Office 2011 for the Mac with macOS High Sierra, you’re not having any issues, you’re having occasional crashes, or Office simply refuses to launch at all.

That about covers most of the possibilities. The problem is Microsoft decided not to support Office 11 under macOS High Sierra, meaning they haven’t tested the apps nor are they going to offer any updates to correct any issues. Essentially, Office 2011 is on its own. If it works for you, wonderful, but if you have any issues, it may be time to consider a replacement.

Of course, software apps do get old, and Office 11 has been around for a long time, in software years. If you have a specific need for Microsoft Office, the Office 2016 for Mac version works fine and is fully supported under macOS High Sierra.

If you just need a Word or Excel work-alike that you can use to share files with others, there are a few options available. If you have a suggestion that you know works with High Sierra, please leave a note in the Comments, below.

Mail Stops Notifying You of New Mail

Have you noticed that Mail is no longer alerting you of new incoming messages via the Notifications center? If you’re used to seeing a banner pop up in the top right corner of your Mac’s display with a brief description of a new piece of mail whenever new mail arrives, you may have noticed the banners stopped once you installed High Sierra.

This bug doesn’t seem to affect everyone, but it happens often enough that Apple should be able to fix the issue in a subsequent update of High Sierra.

But you don’t need to wait for Apple; you can fix the issue yourself by opening System Preferences and selecting Notifications.

Highlight Mail in the Notifications window sidebar, and then select None as the Mail alert style. Wait a moment, then set the notifications style back to Banners or Alerts, whichever you prefer.

Close the Notifications preference pane.

(The Notifications center may need its mail handling alert style reset to work properly after installing High Sierra.)

Launch Mail if it isn’t already running. Mail notifications should now work correctly.

Adobe Photoshop and Illustrator Issues
Adobe Photoshop has a minor issue with High Sierra that prevents the Photoshop window from expanding to full screen whenever the Dock is shown.

Adobe has created a Photoshop plug-in file that can rectify the problem. You’ll find instructions on how to download and install the plug-in at the Adobe Help website.

Adobe Illustrator is experiencing some issues with High Sierra; specifically, the licensing system seems to be broken when the startup drive uses the APFS file system. The result is Illustrator may not launch, or there will be an error message about license problems.

Adobe recommends not upgrading to High Sierra, or not converting to the APFS file system at this time.

There’s an additional issue with Illustrator on macOS High Sierra that results in the wrong color settings being applied; specifically, Emulate Adobe Illustrator 6 becomes the default color setting and is applied to any document you open or new document you create.

The workaround is to manually change the color settings before working with any document.

Select Edit, Color Settings, and then choose the desired settings for the document.

Click OK.

Open the document you wish to work on.

You’ll need to repeat these steps each time you launch Illustrator, or before you open a document that uses a different color space.

Other High Sierra Problems and Fixes
macOS High Sierra is still relatively new, and I suspect there will be quite a few additional issues that will crop up. If you encounter any problems with using High Sierra, please feel free to share with our readers by leaving a comment.

If you’re having High Sierra install issues, you can leave a comment in the Rocket Yard guide: Common Problems During and After macOS High Sierra Installation.

[Update] Stay tuned for issues that you might encounter when running macOS Mojave.

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