macOS Sierra

macOS Sierra: 3 Most Common Issues and Their Fixes

The new Mac OS – macOS Sierra – is available for the Apple Mac and desktop users. And most of you have probably upgraded to the latest macOS Sierra. However, it packs some great new features, it also got a few problems – ranging from strange error messages to Wi-Fi issues.


Here we have provided the three most faced macOS Sierra issues and their fixes. Proceed below to know the three common macOS Sierra issues and their fixes.


3 Most Common macOS Sierra Issues and their Fixes


1. Mac apps “damaged and can’t be opened” error

macOS Sierra

New users, don’t panic if you get this message. Follow the steps below to sort out this issue.

i. Empty Mac cache by using the Finder window. Select Go to Folder in the Go menu. Next, type in ~/Library/Caches and hit enter to go to that folder and empty it.

ii. Hold down the command + option button when you launch the app.

iii. If the issue is related to your Mac security settings, go to Security and Privacy system preferences, and check the Allow applications downloaded from: Anywhere setting.

iv. Reset your PRAM. To do this, shut down your Mac and turn it back on. As soon as you hear the startup sound, hold down the command, option, P and R button simultaneously. Hold these down until you hear the computer restart and the startup sound playing for a second time.


2. Slow Mac after macOS Sierra Upgrade

A latest OS upgrade looks amazing on demos but sometimes after upgrading you find that your speedy computer starts working slow.

To solve this problem follow these steps:

i. Reduce your RAM usage, or upgrade it to make your machine work faster.

To check which apps are using the most memory, launch Activity Monitor and go to the Memory tab. Now, close the program that are making your computer to work slower.

ii. Try resetting your PRAM as described above.

iii. Repairing disk permissions with Disk Utility can make a great impact.


3. Slow Wi-Fi after macOS Sierra Upgrade

Slow Wi-Fi is as annoying as a slow Mac. Here are few solutions to resolve this issue.

i. Turn off your router and check if it needs any update. You can also try turning off the Bluetooth.

ii. De-select proxies. Go to, System Preferences > Network > Advanced > Proxies Tab. Uncheck any box ticked under Select Protocol. Click OK, and then

iii. If the above suggestions don’t work, try deleting your existing Wi-Fi preferences which means removing the system configuration files. So, first back up your Mac and close those apps which are using Wi-Fi, then turn it off using the Wi-Fi menu.

Now, use the Go folder, select Go to folder and enter /Library/Preferences/SystemConfiguration/

Next, select the following files:



Remove these files by either moving them to trash or putting them in a folder on your desktop. Now reboot your Mac, as well as your modem or router.



Hope, these fixes resolve your macOS Sierra issues.

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