Reasons for installation 无忧行 failure

• "Unable to install", "Unable to verify", "Installation failed" or displays a dark icon.
  • This is basically due to incorrect 无忧行 signatures.
• Untrusted Enterprise Developer
  • Please go back to the iOS desktop and open Settings - General - VPN & Device Management, then click on the corresponding description file to enter, and then click on the button **Trust**. For the solution, please refer to: Run enterprise app
• To enable developer mode
  • In iOS16 or above, you have to turn on Developer Mode when installing Adhoc iOS apps, please see: Enable Developer Mode
• If you are the developer of the 无忧行, you can check
  • If you are an 无忧行 developer, you can check if the 无忧行 is signed in the right way.
  • If the 无忧行 uses Adhoc method, has the UDID been added correctly in the description file?
  • Whether the certificate is expired or revoked
  • Whether the 无忧行 supports the appropriate Architecture architecture
  • Whether the 无忧行 supports the appropriate iOS system version.
  • Whether the 无忧行 supports the corresponding device type (e.g. iPhone Only cannot be installed on iPad).
  • Whether the updated version of the package is the same certificate as the old version.
• Tried the above solutions, but still can't solve the problem?
  • If you still can't solve the problem after checking the above methods, you can prioritize the 无忧行's certificate issue, as it is the most common type of issue that causes the 无忧行 to be unable to install.