On a brand new virtual machine, running 13.5.2(my customer's is 13.5, the same problem still exists when the computer upgraded to 14.0), the problem cannot be reproduced. It runs as normal as on the other computers.

codesign -d --entitlements :- /path/to/appproxy Warning: Specifying ':' in the path is deprecated and will not work in a future release ``<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "https://www.apple.com/DTDs/PropertyList-1.0.dtd"><plist version="1.0"> <dict> <key>com.apple.application-identifier</key> <string>{TEAMID}.com.***.AppProxy</string> <key>com.apple.developer.networking.networkextension</key> <array><string>app-proxy-provider-systemextension</string></array> <key>com.apple.developer.team-identifier</key><string>{TEAMID}</string> <key>com.apple.security.app-sandbox</key><true/> <key>com.apple.security.application-groups</key> <array> <string>{TEAMID}.group.com.***</string> </array> <key>com.apple.security.network.client</key><true/> <key>com.apple.security.network.server</key><true/> </dict></plist>`` security cms -D -i /path/to/profile <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> <plist version="1.0"> <dict> <key>AppIDName</key> <string>*** AppProxy</string> <key>ApplicationIdentifierPrefix</key> <array> <string>{TEAMID}</string> </array> <key>CreationDate</key> <date>2023-08-02T01:55:16Z</date> <key>Platform</key> <array> <string>OSX</string> </array> <key>IsXcodeManaged</key> <false/> <key>DeveloperCertificates</key> <array> <data>***</data> </array> <key>DER-Encoded-Profile</key> <data>***</data> <key>PPQCheck</key> <false/> <key>Entitlements</key> <dict> <key>com.apple.developer.system-extension.install</key> <true/> <key>com.apple.developer.networking.networkextension</key> <array> <string>packet-tunnel-provider-systemextension</string> <string>app-proxy-provider-systemextension</string> <string>content-filter-provider-systemextension</string> <string>dns-proxy-systemextension</string> <string>dns-settings</string> <string>relay</string> </array> <key>com.apple.developer.networking.vpn.api</key> <array> <string>allow-vpn</string> </array> <key>com.apple.application-identifier</key> <string>{TEAMID}com.***.AppProxy</string> <key>keychain-access-groups</key> <array> <string>{TEAMID}.*</string> </array> <key>com.apple.developer.team-identifier</key> <string>{TEAMID}</string> </dict> <key>ExpirationDate</key> <date>2041-07-28T01:55:16Z</date> <key>Name</key> <string>*** DeveloperID AppProxy</string> <key>ProvisionsAllDevices</key> <true/> <key>TeamIdentifier</key> <array> <string>{TEAMID}</string> </array> <key>TeamName</key> <string>***</string> <key>TimeToLive</key> <integer>6570</integer> <key>UUID</key> <string>xxxx</string> <key>Version</key> <integer>1</integer> </dict> </plist>

@eskimo, I have use mdm to distribute an managed app to iPhone 16.3.1. In the Profiles & Device Management. My app shows App will use a DNS Proxy for network Access. But it actually doesn't. And the Dns Proxy Extension is not running when I launch the main app. I have stuck at this for days. Really need your help!