macOS v2rayN Developer Cannot Be Verified: Gatekeeper and Network Permissions

At a glance

For anyone who downloaded v2rayN for macOS and can’t open it, or whose app launches but can’t connect. First check your Mac’s chip and where the app is installed, then use System Settings to address a Gatekeeper block. Check the quarantine attribute only if you trust the file’s source and the usual approval steps don’t work. Finally, troubleshoot the core, local listener, system proxy, and any requested permissions separately—don’t assume every connection issue is a permissions problem.

Know what failed: app launch, core startup, or proxy routing

“Developer cannot be verified” and “webpages won’t load” occur at different stages. The first is usually macOS checking whether to trust a downloaded app; the second may involve a core that didn’t start, a mismatched proxy port, node settings, or the network itself. v2rayN is a graphical client: seeing its window only confirms that the app’s interface has launched, not that its core is running and listening.

Keep the exact warning text, then choose the fix based on when it appears. Don’t grant Terminal Full Disk Access just because a connection failed, and don’t disable your Mac’s security checks to open one app.

Symptom	Check first	Next step
“Developer cannot be verified” or “cannot be checked for malicious software”	Gatekeeper’s app trust decision	Check for an approval option under Privacy & Security
Warning says the app is damaged	Download integrity, possible app modification, and signature status	Download it again first; don’t assume the quarantine attribute is the cause
The window opens, but logs report that the core failed to start	Core architecture, execute permissions, and local port	Check the first startup error and the file path in the message
The core runs, but the browser connects directly or reports a proxy error	Whether the system proxy matches the active listener	Check network settings and the local proxy port

Check your Mac’s chip and the app location before installing

Open the Apple menu → About This Mac. Choose the ARM64 installer for a Mac with an Apple chip, or the x64 installer for one with an Intel processor. The wrong architecture can prevent the app from running or cause the interface and bundled core to behave differently. Changing network permissions won’t fix an architecture mismatch.

Use the macOS desktop build: Get the DMG for your Mac’s chip from the Download Center. Don’t try to run Windows program files as a macOS app.
Move it to Applications: Open the DMG and drag the app into the Applications folder in Finder. Once it finishes copying, eject the disk image and launch the app from Applications.
Avoid launching the wrong copy: An old Dock shortcut may still point to a copy in Downloads or on a mounted disk image. For initial troubleshooting, double-click the intended app directly in Finder.
Back up before upgrading: Save your configuration using the client’s supported backup method. Don’t post subscription links, credentials, or configurations containing secrets in public forums.

The commands below assume the app is at /Applications/v2rayN.app. If its name differs in Finder, drag the app from Finder into Terminal to enter its actual path. Keep the quotes or escaping that Terminal adds if the path contains spaces.

“Developer cannot be verified”: approve the app in System Settings first

Gatekeeper evaluates information such as an app’s signature, notarization, and download source. “Developer cannot be verified” doesn’t mean the file is necessarily harmful, but it’s not a reason to ignore the risk. Check the download source and installer you chose, then explicitly approve this app. Button labels may vary slightly by macOS version; the steps below use System Settings.

Trigger the warning

In Applications, double-click v2rayN, read the warning, and close it. Try opening the app once so macOS can add a corresponding entry in Security settings.
Find the security entry

Open the Apple menu → System Settings → Privacy & Security. Scroll down to the Security section and check that the entry refers to the app you just tried to open.
Approve this app

Click Open Anyway or the equivalent button shown by macOS. Authenticate with your account password or Touch ID if prompted, then choose Open in the confirmation dialog.
Check that it launches

Wait for the main window, then check the logs for core startup errors. If you approved the interface app but a later warning names a different executable, verify that it belongs to the current installation.
If there’s no approval option

Try opening the app again, then return to Privacy & Security and check once more. If your Mac is managed by an organization and its policy blocks the app, contact your administrator rather than bypassing the policy.

Quarantine attribute: check before removing

Apps and archives downloaded in a browser often have the com.apple.quarantine extended attribute. The app may retain it after extraction or copying. This attribute is part of macOS’s download checks, not a sign that a file is damaged. Only consider changing it for one app after verifying the source, installation path, and app identity—and only if the usual approval steps haven’t worked.

Approve in System Settings

Recommended

Use Privacy & Security to explicitly approve the app while keeping macOS’s regular security checks in place. It’s also easier to confirm exactly which app you’re approving.

Best for: Apps from a trusted source blocked by the standard developer verification prompt.

Remove the quarantine attribute for one app

Check the attribute in Terminal and remove it only from a verified app bundle. This changes files inside the target app bundle, so check the command path carefully.

Best for: Troubleshooting a verified app that remains blocked due to quarantine after standard approval.

Open Applications → Utilities → Terminal and start with the read-only check. Run the two commands separately. Removing the attribute is not a standard fix for every installation failure.

# Check the target app's quarantine attribute first
xattr -p com.apple.quarantine "/Applications/v2rayN.app"

# Remove the app bundle's quarantine attribute recursively only after verifying its source and path
xattr -dr com.apple.quarantine "/Applications/v2rayN.app"

If the query returns No such xattr, the target doesn’t have this attribute. That doesn’t confirm that files inside it, its signature, or its architecture are otherwise okay.
If you see No such file, check the app’s actual name and location. Don’t replace the command with one that scans the entire disk.
If you see Permission denied or Operation not permitted, check the file owner, app location, and device management restrictions. Don’t add administrator privileges as a first step.
If macOS still says the app is damaged after removal, download it again and check the installation process. Don’t recursively change the entire Applications folder or disable Gatekeeper globally.

First connection: system proxy and TUN permissions are different

Standard system proxy and TUN modes route traffic differently. The system proxy directs apps that honor system proxy settings to a local proxy endpoint. TUN uses a virtual network interface to capture matching traffic and may require elevated permissions or a helper component. The permissions requested depend on the client build and implementation; you won’t necessarily see the same prompts on every installation.

Troubleshooting order: check the system proxy before considering TUN

System proxy mode

Import a trusted subscription or existing configuration, select an available server, and start the core.
In v2rayN’s system proxy controls, choose Set system proxy, then check the local listening address and port.
Go to System Settings → Network → your current network → Details → Proxies and check the settings.
Apps that don’t follow system proxy settings may still connect directly. Configure them separately or choose a suitable traffic-routing mode.

TUN mode

First confirm that the standard proxy works, so you’re not troubleshooting a node and a virtual interface at the same time.
Enable TUN according to the instructions for your client, and check any administrator authentication or helper installation request.
Approve a VPN configuration or network extension only if macOS actually requests one, and verify who is requesting it first.
If another traffic-routing app conflicts with TUN, disable one of them and test again.

Grant permissions in response to actual prompts. A standard local proxy doesn’t require enabling every network, security, or disk permission.

On macOS versions with a Local Network permission list, check app access under System Settings → Privacy & Security → Local Network. This permission mainly affects access to devices or services on your local network; it’s not a master switch for all internet connections. It’s worth checking when using a LAN-based proxy or DNS service, or sharing a proxy with other devices.

System Settings → Network → Firewall primarily manages incoming connections. If you’re using a proxy only on your Mac, don’t turn off the firewall to fix an outbound timeout. To let devices on your local network access your proxy, check the listening address, the client’s LAN access setting, and the firewall rules—and restrict who can connect.

Check ports and run a few commands instead of reinstalling repeatedly

The examples below use a SOCKS endpoint at 127.0.0.1:10808 and a remote server port of 443. These aren’t fixed defaults for every installation; replace them with values from your current configuration before testing. The remote port depends on the server configuration, while the local port must match the client listener and system proxy settings.

127.0.0.1

Loopback address on this Mac; not exposed to your local network

10808

Example local SOCKS port

443

Example remote port; use the value from your node configuration

# Show the current macOS proxy settings
scutil --proxy

# Check whether a process is listening on the example local port
lsof -nP -iTCP:10808 -sTCP:LISTEN

# Test only whether a TCP connection to the local endpoint can be established
nc -vz 127.0.0.1 10808

# Use the SOCKS endpoint explicitly to request a test website
curl --proxy socks5h://127.0.0.1:10808 --connect-timeout 10 -I https://example.com

The enabled status, address, and port shown by scutil --proxy should match the client’s actual settings. HTTP and SOCKS are different proxy endpoints; matching port numbers alone don’t mean the configuration is correct. Command-line tools may not automatically use the graphical system proxy, which is why the curl command above specifies the proxy explicitly.

Nothing is listening: Check the client logs for a core startup failure, a port conflict, or a configuration parsing error. Switching the system proxy back and forth won’t help at this stage.
The local connection works, but curl times out: Check the server address, port, protocol, and transport settings. A successful local TCP connection only confirms that the local endpoint is available.
curl gets a response, but the browser fails: Check the browser’s own proxy settings and extensions, and whether another program has overridden the system proxy.
You see a certificate error: Check System Settings → General → Date & Time, along with the node’s server name and TLS settings. Don’t work around it by disabling certificate verification.

In this test, socks5h sends the destination hostname to the proxy for resolution, but it doesn’t prove that every app on your system uses the same DNS route. If only one app fails, check how that app connects rather than generalizing from a single test.

Common questions: warnings, ports, and restoring settings after quitting

Why is the core still blocked after I approved the app?

The interface and the core are separate executables. Check the file path in the log or warning, confirm it belongs to the current app bundle, and verify that you downloaded the right architecture. If it’s a standard trust warning, look for the matching entry under Privacy & Security. Don’t approve an unknown program automatically.

A developer verification warning appeared again after an update. Do I need to approve it again?

A newly downloaded app may have the quarantine attribute again, and its identity or signature may have changed. Verify the new download source and app location, then follow the System Settings steps. A previous approval doesn’t mean every later file should be trusted automatically.

What should I do if the logs say address already in use?

Use the lsof command above to check the actual port and identify the process using it. First, quit any duplicate client instances normally. You can also change the local listening port in v2rayN’s settings, save, and restart the core. Then set the system proxy again so it doesn’t point to the old port.

Why can’t I open any webpages after quitting v2rayN?

The system proxy may still point to a local endpoint that has stopped. In the client, clear the system proxy before quitting. If the app won’t open, go to System Settings → Network → your current network → Details → Proxies and turn off the proxy settings changed for this session. Don’t change proxy settings managed by your organization.

Do I need to grant Full Disk Access?

A standard installation, subscription import, and local system proxy usually don’t need Full Disk Access. If writing a file fails, check the target directory and file permissions. If you need TUN, handle the relevant administrator or network permission. Granting only the permission required by a specific error makes problems easier to diagnose than enabling everything.

Once you’ve finished troubleshooting, note where the app is installed, which proxy mode you’re using, the local endpoint port, and the first actionable error in the logs. If you ask for help, share the exact warning and steps you tried; hide subscription URLs, node passwords, UUIDs, and other credentials first. Checking app trust, core startup, and traffic routing separately is usually more effective than repeatedly deleting the app.