


The installer payload failed signature check macOS error
Jul 23, 2025 am 12:47 AMWhen you encounter the "installer payload failed signature check" error, first make sure that you are using the installer obtained by the official channel and re-create the installation USB flash drive; secondly check the system time and network connection; finally try to replace the USB flash drive or port. This error is usually caused by mismatch in the installation file signature and may be due to unofficial images, damaged downloads, wrong time settings, or hardware compatibility issues. Solutions include creating a boot disk through Apple's official tools, correcting time and time zones, ensuring the network is smooth, replacing the USB disk brand or interface, and adjusting settings appropriately in the virtual machine. If it still cannot be solved, it is recommended to download the installation package from the official and create the boot disk again.
You encounter the error message "installer payload failed signature check", indicating that macOS has detected a problem with the signature of the installation file during the installation process. This usually means that the installation package is incomplete, modified, or a version not from the official source.

Official mirroring and verification methods
The macOS installer is very sensitive to digital signatures and triggers this type of error once the hash value of the installation file (payload) is inconsistent with the record when the Apple certificate is issued. This may be because:

- The downloaded system image is corrupted
- Used a third-party modified installation package
- System time or date setting error (affects certificate verification)
The first step to solving this problem is to confirm that you are using the installer obtained from the official channel . If you download a dmg or iso file from an unofficial website, it is likely that it is risky or corrupted in itself.
You can check whether it is an official image by:

- Re-download on Apple's official website or trusted developer resource platform
- Check if the SHA hash value is consistent with the official announcement (if any)
- Create a boot disk with trusted tools, such as the "create macOS installer" method provided by Apple
How to fix payload failed signature check error
Method 1: Re-create and install USB drive
Many users encounter this problem because they did not operate correctly when making and installing USB flash drives. Especially if you use third-party tools (such as BalenaEtcher, UNetbootin, etc.), they are not always compatible with macOS's signature mechanism.
Recommended practices:
- Create a boot disk using the official Apple support
- Make sure your terminal commands are correct (such as using the
createinstallmedia
command) - USB disk formatted as Mac OS extension (log-style) GUID partition diagram
Method 2: Check system time and network connection
The macOS installation process relies on certificate verification, which in turn depends on the correct system time and Internet connection.
Try the following steps:
- Set the correct time and time zone (can be adjusted manually)
- Plug in the internet cable or make sure the wireless network is available
- If you are in a dual-system environment, please pay attention to whether the BIOS/UEFI time settings are normal
Method 3: Try replacing the USB drive or port
Sometimes the problem lies at the hardware level, such as some USB 3.0 interfaces are not compatible with earlier macOS boot programs, or the USB drive itself has bad channels.
suggestion:
- Try different USB drive brands or models
- Try plugging into the USB 2.0 back panel of the motherboard
- After formatting the USB flash drive, write to the installation image again
Things to note
If you are trying to install macOS in a virtual machine, it is also possible that signature verification fails due to security restrictions of the virtualized environment. Some virtual machines (such as VMware and VirtualBox) require additional patches or specific options to support the official signature verification process.
Additionally, this problem occurs when some older macOS installers run on new devices, as Apple has stopped supporting its signatures.
Basically, these common reasons and solutions are all about them. In most cases, it can be solved by redone the official installation disk once.
The above is the detailed content of The installer payload failed signature check macOS error. For more information, please follow other related articles on the PHP Chinese website!

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