The firewall of your server is blocking outbound calls. Please contact your hosting provider to fix this issue. cURL error 28: Operation timed out after 2001 milliseconds with 0 out of 0 bytes received

The firewall of your server is blocking outbound calls. Please contact your hosting provider to fix this issue. cURL error 28: Operation timed out after 2001 milliseconds with 0 out of 0 bytes received

This problem is a very common server related issue. In most of the cases not created by a particular theme or plugin, nor by WordPress.

 

https://docs.presscustomizr.com

How to fix it ?

The first thing to do is to update your WordPress to the latest version if not already done.

Then if the problem is still there, contact your hosting company and ask the hosting support team to check the following points :

You can also install the Query Monitor plugin and check the status of the HTTP API Calls in the admin page where the error is displayed.

How to create a bootable installer for macOS – Use the ‘createinstallmedia’ command in Terminal

How to create a bootable installer for macOS

You can use an external drive or secondary volume as a startup disk from which to install the Mac operating system.

These advanced steps are primarily for system administrators and others who are familiar with the command line. You don’t need a bootable installer to upgrade macOS or reinstall macOS, but it can be useful when you want to install on multiple computers without downloading the installer each time.

Download macOS

Find the appropriate download link in the upgrade instructions for each macOS version:

macOS CatalinamacOS Mojaveor macOS High Sierra
Installers for each of these macOS versions download directly to your Applications folder as an app named Install macOS Catalina, Install macOS Mojave, or Install macOS High Sierra. If the installer opens after downloading, quit it without continuing installation. Important: To get the correct installer, download from a Mac that is using macOS Sierra 10.12.5 or later, or El Capitan 10.11.6. Enterprise administrators, please download from Apple, not a locally hosted software-update server.

OS X El Capitan
El Capitan downloads as a disk image. On a Mac that is compatible with El Capitan, open the disk image and run the installer within, named InstallMacOSX.pkg. It installs an app named Install OS X El Capitan into your Applications folder. You will create the bootable installer from this app, not from the disk image or .pkg installer.

Use the ‘createinstallmedia’ command in Terminal

  1. Connect the USB flash drive or other volume that you’re using for the bootable installer. Make sure that it has at least 12GB of available storage and is formatted as Mac OS Extended.
  2. Open Terminal, which is in the Utilities folder of your Applications folder.
  3. Type or paste one of the following commands in Terminal. These assume that the installer is still in your Applications folder, and MyVolume is the name of the USB flash drive or other volume you’re using. If it has a different name, replace MyVolume in these commands with the name of your volume.

    Catalina:*

    sudo /Applications/Install\ macOS\ Catalina.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume
    

    Mojave:*

    sudo /Applications/Install\ macOS\ Mojave.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume
    

    High Sierra:*

    sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume
    

    El Capitan:

    sudo /Applications/Install\ OS\ X\ El\ Capitan.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume --applicationpath /Applications/Install\ OS\ X\ El\ Capitan.app
    
  4. Press Return after typing the command.
  5. When prompted, type your administrator password and press Return again. Terminal doesn’t show any characters as you type your password.
  6. When prompted, type Y to confirm that you want to erase the volume, then press Return. Terminal shows the progress as the bootable installer is created.
  7. When Terminal says that it’s done, the volume will have the same name as the installer you downloaded, such as Install macOS Catalina. You can now quit Terminal and eject the volume.

* If your Mac is using macOS Sierra or earlier, include the --applicationpath argument, similar to the way this argument is used in the command for El Capitan.

Use the bootable installer

After creating the bootable installer, follow these steps to use it:

  1. Plug the bootable installer into a compatible Mac.
  2. Use Startup Manager or Startup Disk preferences to select the bootable installer as the startup disk, then start up from it. Your Mac will start up to macOS Recovery.
    Learn about selecting a startup disk, including what to do if your Mac doesn’t start up from it.
  3. Choose your language, if prompted.
  4. A bootable installer doesn’t download macOS from the Internet, but it does require the Internet to get information specific to your Mac model, such as firmware updates. If you need to connect to a Wi-Fi network, use the Wi-Fi menu  in the menu bar.
  5. Select Install macOS (or Install OS X) from the Utilities window, then click Continue and follow the onscreen instructions.

Learn more

For more information about the createinstallmedia command and the arguments that you can use with it, make sure that the macOS installer is in your Applications folder, then enter this path in Terminal:

Catalina:

/Applications/Install\ macOS\ Catalina.app/Contents/Resources/createinstallmedia

Mojave:

/Applications/Install\ macOS\ Mojave.app/Contents/Resources/createinstallmedia

High Sierra:

/Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia

El Capitan:

/Applications/Install\ OS\ X\ El\ Capitan.app/Contents/Resources/createinstallmedia
Published Date: 

Imac A1312 not power on

LED 1 – Indicates that the trickle voltage from the power supply is detected by the main logic board. This LED will remain ON while the iMac is connected to the AC power. The LED will remain on even when the computer has been shut down or put to sleep. The LED will turn off only if the AC power is disconnected or the power supply is faulty.

LED 2 – Indicates that the main logic board has detected proper power from the power supply when the computer is turned on. This LED will be ON when the computer is turned on and the power supply is working correctly.

LED 3 – Indicates that the computer and the video card are communicating. This LED will be ON when the computer is communicating properly with the video card. If LEDs 1 and 2 are ON and you heard the startup sound, but LED 3 is OFF, then the video card might be installed incorrectly or need replacement.

LED 4 – Indicates that the computer and the LCD display panel are communicating. This LED will be ON when the computer is turned on and video signal is being generated. If the LED is ON and there is no image on the LCD display panel, the LCD display panel or inverter might be installed incorrectly or need replacement.

 

 

start off by checking what Apple suggest:

No Power, Dead Unit

Symptoms Quick Check

No Power, Dead Unit

• No power

• No fan spin

• No startup chime

• No image on external display

• No hard drive or optical drive activity

• Caps Lock LED on wired keyboard doesn’t light when pressed.

1. Verify power source.

2. Verify power cable.

3. Listen closely for signs of activity from system including: rotating fans, hard drive or optical drive

activity, startup chime, etc.

Deep Dive

1. Power ON system. Verify if there is any indication that the system has powered up (fan rotation, hard drive or optical drive noise, backlight turns on).

Yes The symptom is powering up.

Go to Won’t Start Up.

No Go to step 2.

2. Disconnect AC cable Remove glass and LCD panel and locate the diagnostic LEDs in the middle of logic board. Reconnect AC cable to system. Verify if diagnostic LED #1 turns ON. You may alternately check for presence of a 12V DC signal between pin 4 and pin 1 of the logic board.

Yes Standby power voltage being supplied by power supply.

Go to step 3.

No Go to step 4.

3. Press power button while monitoring diagnostic LEDs. Verify if LED #2 turns ON and remains ON after releasing the power button. You may alternately check for a power request signal between pin 12 and pin 1 of logic board.

Yes Power supply functioning and logic board detects supply voltages and is powered on.

Go to Won’t Start Up.

No Go to step 5.

4. Disconnect AC cable. Carefully inspect the connectors between AC inlet and power supply, then DC

connectors and cables between power supply and logic board, for damage or poor connections.

Yes Reseat misconnected cable(s), or replace damaged one(s).

No Replace DC power cable harness. Go to step 8.

5. Inspect power button and verify if it is properly connected to the logic board.

Yes Go to step 6.

No Reconnect power button.

6. Disconnect power button from logic board. Inspect cable and connector for damage. Using a multimeter (set as ohmmeter), verify continuity between the two pins of the power button when it is pressed.

Yes Power button is functioning correctly. Reconnect power button to logic board and go to step 7.

No Power button faulty. Replace rear housing (which includes power button).

7. Reconnect AC cable Press power button and Verify if system turns ON. You may alternately check for presence of a 12V DC signal between pin 11 and pin 1 of logic board when power button is pressed.

Yes Power supply functioning. If system still won’t boot, go to Won’t Start Up.

No Replace DC power cable harness. Go to step 8.

8. Press power button and verify if system turns ON.

Yes Issue solved with replaced DC power cable harness.

No Replace power supply.

Go to step 9.

9. Press power button and verify if system turns ON.

Yes Issue solved with replaced power supply.

No Reinstall power supply and replace logic board.

If No Power symptom persists after all steps have been followed use minimum configuration troubleshooting to proceed. Try disconnecting hard drive(s), optical drive, AirPort, , SD card modules and Bluetooth/Camera cable to determine if one of them is preventing the power supply from functioning.

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