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If you are facing issue in connecting air pods with Mac OS Big Sur then follow below step on how to fix bluetooth issue easily. How to fix bluetooth issue in Big Sur To fix issues with Bluetooth devices not working in macOS Big Sur try opening up Finder and.

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• You can fix a disappearing Dock on a Mac computer through a few troubleshooting methods.
• Your Mac Dock keeps a selection of commonly used apps along the bottom edge of your screen for quick access.
• While the Dock is usually visible on the screen, it can disappear with no clear way to get it back.
• Your Mac's Dock doesn't show up in full screen mode, and it can be set to disappear automatically, so troubleshoot these issues first.
• Visit Business Insider's Tech Reference library for more stories.

The Mac Dock comes pre-loaded with some of your system's most-used applications. You can also customize which applications are included in the Dock.

Sometimes that Dock can disappear, making navigating your Mac more tedious. The upgrade to Mac's Catalina OS, for example, has seen users complain that their settings are automatically changed, so the Dock disappears by default.

If you're in full screen mode, it's important to note the Dock will not show up. To do so, disable fullscreen mode by hitting the 'Esc' key and hitting the green button in the top left corner.

You can also check whether your Dock is set to hide automatically by moving your cursor over the bottom edge of your screen and seeing if it reappears.

If neither of these things is the reason, sometimes adjusting your settings can often make your Dock reappear. Here's how to get your Dock back.

How to fix a disappearing Dock on a Mac in System Preferences

1. Click the Apple logo in your Mac's upper left corner.

2. Scroll down to 'System Preferences.'

3. Select 'Dock.'

4. If 'Automatically hide and show the Dock' is checked, uncheck the box next to it.

How to fix a disappearing Dock on a Mac by restarting the Dock

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1. Click on your desktop screen until you see the 'Finder' menu appear in the top left corner.

2. Click on 'File.'

3. Select 'New Finder Window.'

4. Select the 'Utilities' icon.

5. Launch the Terminal.

6. Paste or write 'killall Dock' into the Terminal window to turn off the Dock and automatically restart it.

How to fix a disappearing Dock on a Mac by resetting the Preferences list

1. Click on your desktop until you see the Finder toolbar.

2. Select 'Go.'

3. Scroll down to and choose 'Go to folder.'

4. Type '~/Library' into the search bar that appears and hit enter.

5. Click on the 'Preferences' folder.

6. Type 'com.apple.dock.plist' into the Preferences window search bar.

7. When you find the file, drag it into the trash.

8. Restart your computer.

Related coverage from Tech Reference:

Some Mac owners see untrusted_cert_title as an error when attempting to reinstall macOS. This problem arises when the Mac’s system clock is set incorrectly, and you can wind up in a chicken-and-egg problem: without macOS installed, there’s no straightforward way to set the clock, which would let you install macOS.

To create a secure connection, many encryption algorithms require an up-to-date clock. The encryption system wants to check whether a digital certificate that validates the integrity of a piece of software hasn’t yet expired. If the date embedded in the certificate is before the issuance date or after the expiration date, the software rightly balks—and macOS unfortunately spits out an error, as this eventuality wasn’t considered as far back as Mojave. (The problem may have been fixed since.)

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To correct the date on your Mac, first determine your current date and time to format it for the command needed: you need the day of the month, the numeric month of the year (1 to 12), the current clock in hours and minutes using 24-hour format, and the last two digits of the current year.

In the U.S., and any country in which the day of the month customarily appears after the month, as in November 15, 2020, the format is day of month (1 to 31), month (1 to 12), hour (0 to 23), minutes (0 to 59), and year (20, as in 2020). All numbers that are single digits (like the 9th day of November) are padded with a 0 before them so that they are always two digits long. For example, 1:40 p.m. on November 15, 2020, would be formatted 1115134020.

In countries in which the day of the month comes first, you reverse the day of month and month of the year: 1511134020 in the above example.

Now follow these steps:

1. Start the Mac up while holding down Command-R to boot into macOS Recovery.

2. When the screen appears with a number of choices, ignore those and choose Terminal from the Utilities menu.

3. Enter exactly the following and press Return, substituting the 10-digit date sequence you figured out above: date 1115134020

4. Terminal will produce a line of output, if the command was entered correctly, that reads something like: Sun Nov 16 13:40:00 PST 2020.

5. Choose Terminal > Quit.

6. From the main recover window, click Reinstall macOS and follow prompts.

This Mac 911 article is in response to a question submitted by Macworld reader Tayla.

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We’ve compiled a list of the questions we get asked most frequently along with answers and links to columns: read our super FAQ to see if your question is covered. If not, we’re always looking for new problems to solve! Email yours to mac911@macworld.comincluding screen captures as appropriate, and whether you want your full name used. Not every question will be answered, we don’t reply to email, and we cannot provide direct troubleshooting advice.