El Capitan Cannot Be Verified

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El Capitan Cannot Be Verified

Question: Q: El Capitan installer cannot be verified I am trying to upgrade an older iMac (2008) from OS 10.6.8 to El Capitan for a disabled client who really needs to use a Mac instead of a PC! EveryMac says it can handle El Capitan if I upgrade RAM.

El Capitan Cannot Be Verified

If you are trying to install a fresh copy of Mac OS X 10.11 El Captain after downloading it from the App Store and you are using a bootable USB drive, you may receive an error message right before the install kicks off.

This copy of the Install OS X El Captain application can’t be verified. It may have been corrupted or tampered with during downloading.

This error message indicates the MPKG mechanism for checking the application installer checksum (used for proving the install files are valid and from Apple) files failed. It basically means Mac OS X will not proceed installing a copy of El Captain because it can’t prove its authenticity – even if the installation is ok. You can still push forward and install Mac OS X El Captain. Follow the steps below.

  • These errors can be encountered during basically any installation on OS X El Capitan or OS X Yosemite, ranging from a standard App Store update, Internet Recovery, cleaning installations, and the bootable installation volume on the target mac.
  • EL CAPITAN ERROR SOLVED: You should change the clock to 5 years backThis copy of the Install OS X El Capitan application can't be verified. It may have been.

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Everyone Says: Check the System Time on Mac

Apparently, the system time on your Mac may be off causing the El Captain installer to think your system date is way off. This happens if your onboard motherboard battery is toasted. Check the date to ensure it’s right – follow these steps.

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1. Cancel out to the installation (If you are still on your bootable image of El Captain). Go to Utilities -> Terminal.

2. Type date. If your date is correct, then proceed to the next section below. If it’s not correct, continue with these steps.

3. Set the current date and time. In Terminal, type the following command in this format shown in example below date MONTH(02)-DATE(28)-TIME(01:51pm)-YEAR(15)

Hit enter to apply the new date. It will display. Now, attempt to install El Captain. If it still fails with the same error message, proceed to next steps below.

Force Install El Captain Terminal Command

Can

If your confident the install you just downloaded from the App Store is valid, just use Terminal to force install it. You can do this while still booted from your USB Drive or media. Follow the steps below.

1. Type the following command into Terminal, replacing with your Volume names.

2. The install should kick off and you’ll see in Terminal “installer: OS Install started”. Wait for it to complete then reboot.

If all else fails, let us know. You may actually have a corrupt copy of El Captain in the end – maybe you disconnected your USB Jump drive incorrectly causing the files to become corrupt. Try re-downloading El Captain and re-copying it to your media.

Use the comments form to let us know if you have issues or found another way to bypass this error.

We recommend that you download the latest version.

Watch Face Studio for Windows

Watch Face Studio for macOS


Watch Face Studio does not install on macOS

Newer versions of macOS include a feature that allows only notarized software to be run on your system. You may see one or more of the following messages when you try to install Watch Face Studio on macOS.

  • “WatchFaceStudio.pkg” cannot be opened because the developer cannot be verified.


    If you see this message, you need to confirm that you want to install Watch Face Studio. Do the following:
  1. Open System Preferences (click on the Apple logo).
  2. Click on Security & Privacy.
  3. From the General tab, under Allow apps downloaded from, click Open Anyway next to the “WatchFaceStudio.pkg was blocked from use because it is not from an identified developer.”
  4. A window displays the message “macOS cannot verify the developer of WatchFaceStudio.pkg. Are you sure you want to open it?” Click Open to install Watch Face Studio.

  • “WatchFaceStudio.pkg” can’t be opened because Apple cannot check it for malicious software.

    or

  • “WatchFaceStudio.pkg” can’t be opened because it was not downloaded from the App Store.


    If you see one of the messages listed above, you need to configure your system to allow it to install Watch Face Studio and then confirm that you want to install Watch Face Studio. Do the following:
  1. Open System Preferences (click on the Apple logo).
  2. Click on Security & Privacy.
  3. From the General tab, under Allow apps downloaded from, select App Store and identified developers.
  4. Install Watch Face Studio. You will see another message, “WatchFaceStudio.pkg cannot be opened because the developer cannot be verified.” Follow the steps in the section above.

For more information, see Safely open apps on your Mac.

Verified

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Requirements

  • Microsoft Windows® 10 or later (64-bit), Apple macOS® X 10.11 (El Capitan) or later (64-bit)
  • At least dual-core 2 GHz of CPU
  • At least 2 GB of RAM
  • At least 1 GB of free disk space

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