Clash Verge Rev TUN Mode Setup on Windows: How to Enable

What TUN mode does in Clash Verge Rev

Clash Verge Rev TUN mode creates a virtual network interface on Windows and allows the Mihomo core to capture traffic at the system network layer. This is different from simply enabling the Windows system proxy. A browser that respects HTTP or SOCKS settings can work through a local mixed port, while a game, command-line utility, updater, or desktop application may ignore those settings completely. TUN mode is intended for the second group: applications that open ordinary TCP or UDP connections without consulting a proxy configuration.

In practice, the virtual interface receives packets before they reach the normal network adapter. Clash Verge Rev then uses its routing rules to decide whether each connection should go to a proxy policy group or directly to the destination. The application does not need to know that a proxy exists. This is why TUN mode can fix software that remains offline even when the browser works and the Clash dashboard shows active nodes.

TUN mode does not automatically make every connection successful. It adds another routing layer, DNS behavior, and permission requirement to the system. A wrong service mode, a conflicting VPN filter, an unsuitable DNS strategy, or a rule that sends the destination to DIRECT can still produce the appearance of failure. Treat the feature as a traffic-capture mechanism, not as a replacement for a valid profile, healthy proxy nodes, or correctly ordered rules.

The Windows client also has two separate concepts that are easy to confuse. System proxy changes Windows and application proxy settings, usually by pointing them at Clash Verge Rev’s HTTP or mixed port. TUN mode works below those application settings by installing or using a virtual adapter. You can use both during testing, but understanding which layer is active makes troubleshooting much faster. If a browser works only after system proxy is enabled, that does not prove TUN is working; if a game works while system proxy is disabled, that is stronger evidence that TUN capture is active.

Prepare Windows before enabling the tunnel

Before changing the toggle, update Clash Verge Rev and confirm that the application is using a maintained Mihomo-compatible core. Menu names can differ slightly between releases, but the essential controls normally appear under Settings, General, or a page named TUN Mode. An outdated client may display the option while shipping an older core or helper component that behaves differently from current documentation.

Import and activate a known-good profile first. Open the profile editor or configuration view and check that it contains a valid proxy-groups section, usable proxy providers, and a final routing rule. A profile that cannot connect through the ordinary mixed port should not be diagnosed with TUN mode. Start with one reliable node or selector group rather than a complicated collection of automatic tests, fallback chains, and remote rule providers. Fewer moving parts make the first packet trace meaningful.

Close other tunnel applications before testing. Existing VPN clients, game accelerators, WARP-style tools, older Clash forks, and security products with network filtering can install competing adapters or filters. They may also restore their own route after every reboot. You do not necessarily need to uninstall them, but disable their tunnel function temporarily and record which service you turned off. If two programs both claim to be the default network path, a successful toggle in Clash Verge Rev does not guarantee that its interface is receiving packets.

Check whether your Windows account can approve elevated actions. TUN mode commonly needs administrator permission to create a virtual adapter, change routes, or start a service. A standard account may open the interface normally but fail when the tunnel is enabled. Watch for a User Account Control prompt. If no prompt appears and the status immediately returns to disabled, relaunch Clash Verge Rev with Run as administrator for a controlled test. On a managed computer, an administrator may still be unable to install the required component because application control policies can block it.

Establish a baseline before enabling anything. With Clash Verge Rev in its ordinary system-proxy mode, open a permitted website, inspect the connection log, and note the local listener port shown in the settings. Then disable the system proxy and repeat the test with a program that normally bypasses proxy settings. This comparison tells you whether the later improvement comes from TUN capture or from a hidden Windows proxy setting left over from another client.

• Confirm that the profile is active and the selected policy group has at least one responsive node.
• Synchronize Windows time so TLS certificates and subscription requests are not rejected because of clock drift.
• Temporarily pause competing VPN or packet-filtering software during the baseline.
• Keep the mixed port and TUN settings visible so you can compare logs after each change.

Enable TUN mode in Clash Verge Rev

Launch Clash Verge Rev and select the active profile. Open the settings area and locate the TUN control. Depending on the build, it may be labeled TUN, Service Mode, or System Integration. Enable the service or elevated mode first if the interface provides a separate switch. Approve the Windows permission dialog and wait several seconds for the status to settle. Do not repeatedly click the toggle while Windows is still creating the adapter; repeated starts can leave stale service processes that make the next attempt harder to interpret.

When the TUN panel exposes an implementation choice, prefer the default recommended by the bundled Mihomo core. Some versions provide options related to the Windows network stack, virtual interface driver, or stack behavior. These options affect compatibility with UDP, IPv6, and applications that open unusual socket types. Start with the default stack and change one option at a time only when you have a reproducible failure. A setting that works on one Windows installation may behave differently on another because of firewall rules, virtualization software, or corporate endpoint controls.

If there is a strict route or automatic route option, leave the recommended value enabled for the first test. The purpose is to let the core install the routes needed to capture traffic without manually editing the routing table. Manual route changes can be useful in advanced split-tunnel designs, but they can also send local printers, private subnets, or the Clash control interface into the tunnel unexpectedly. Keep local network access conservative until basic connectivity is confirmed.

DNS settings deserve special attention. TUN capture can expose a mismatch between the DNS answer used by Windows and the address selected by Clash. If the profile uses fake-IP behavior, make sure the current core and client support the chosen DNS mode and that the fake-IP filter does not include addresses that must remain local. If you do not need advanced DNS experimentation, use the profile’s stable recommended DNS configuration. Changing TUN, fake-IP, nameservers, and rule providers at the same time removes the ability to identify the actual cause of a failure.

After enabling TUN, open Windows Network Connections or Settings → Network & Internet and look for a newly active virtual adapter. The exact adapter name varies by release. Its presence is useful evidence, but it is not proof that traffic is being routed correctly. Also check the Clash Verge Rev status indicator and connection log. A running adapter with no new connection entries may mean the application under test is using another interface, a bypass rule, or a competing VPN filter.

Important: Do not delete virtual adapters at random while Clash Verge Rev is running. Disable TUN, exit the client, and then remove only a clearly identified stale component if your troubleshooting plan requires it. Rebooting after driver changes is often safer than stacking several repair actions in one session.

Test TUN mode without guessing

Test in layers, moving from a simple request to the application that originally failed. First, verify that the Clash dashboard records a new connection when you open a permitted HTTPS website with the Windows system proxy disabled. This confirms that at least one system-level flow reaches the core. Next, test a program known to ignore Windows proxy settings. If it now appears in the connection log, TUN capture is probably active for that protocol.

Use Windows tools to separate DNS, TCP, and application problems. ping is not a complete proxy test because many hosts block ICMP, but it can reveal an obvious local network problem. A browser request can confirm HTTPS behavior, while a command such as curl can show whether a terminal request is using an environment variable or the operating system route. Avoid treating a single successful command as proof that every UDP or long-lived connection will work. Different programs use different resolver libraries, transport protocols, and certificate stores.

Inspect the Clash log while starting the failing application. Look for the destination hostname, protocol, selected rule, policy group, and final connection result. A line showing DIRECT is not automatically wrong; some services should remain direct. The useful question is whether that decision matches your intended policy. A rule such as DOMAIN-SUFFIX may miss a related hostname, while a broad GEOIP or MATCH rule may send it somewhere unexpected. If the log contains no entry at all, focus on adapter ownership, process bypass behavior, firewall filters, or an active competing tunnel rather than changing proxy nodes.

Test both IPv4 and IPv6 when your network provides both. Some applications prefer IPv6 and can appear unreachable if the profile routes only IPv4 traffic through the intended policy. Conversely, disabling or capturing IPv6 without a deliberate plan can create slow fallback behavior. Compare the connection log with the application’s own error message instead of assuming that “no page loaded” identifies the protocol that failed.

A practical verification sequence is:

1. Disable the Windows system proxy and leave only TUN enabled.
2. Open a simple HTTPS destination and confirm a matching log entry.
3. Start a proxy-unaware application and check whether its process traffic appears.
4. Review the selected rule and policy group instead of looking only at the connected icon.
5. Stop TUN, repeat the same test, and compare the result with the captured state.

Keep a short record of each test: time, profile name, selected group, TUN status, system-proxy status, destination, and result. This is especially valuable when a remote rule provider refreshes between tests. Without a record, operators often compare two different configurations and conclude that the tunnel is random when the policy input actually changed.

Fix common Windows TUN failures

Permission, service, and adapter errors

If enabling TUN produces an access-denied message, relaunch the client with administrator privileges and check whether Windows Security or endpoint protection blocked the helper. Review the Windows Event Viewer or the security product’s quarantine history rather than downloading a replacement driver from an unknown forum. If the adapter exists but remains disconnected, disable TUN, reboot, and enable it once again after confirming that no second tunnel service starts automatically.

A stale adapter can also preserve an old route. Remove it only through a documented Clash Verge Rev or Mihomo maintenance path, then reboot before reinstalling the client component. Do not manually edit the registry or delete every network adapter as a first response. That approach can break Wi-Fi, virtualization, Docker networking, or corporate access while leaving the original policy problem untouched.

The application still cannot connect

Start with the log. If the application’s hostname appears and the rule sends it to an unsuitable group, fix the rule or select a policy that is valid for the service. If the hostname appears with repeated timeout errors, test another node and check whether the destination uses UDP, WebSocket, QUIC, or a long-lived stream. A browser success proves little when the failing application requires a transport that the selected path handles differently.

If no application traffic appears, inspect Windows Firewall, third-party security filters, and per-application exclusions. Some products classify virtual adapters as untrusted networks and block them until explicitly allowed. Also check whether the application runs inside a sandbox, virtual machine, Windows Subsystem for Linux environment, or game launcher process with its own network boundary. TUN capture on the host does not guarantee identical behavior inside every guest or isolated container.

DNS, local devices, and unexpected bypasses

When a domain resolves but the connection goes to the wrong address, compare the profile’s DNS mode with the application’s resolver behavior. Clear only the relevant Windows DNS cache after changing settings, then retest. Do not rotate nameservers indefinitely if the log already shows that the selected rule is DIRECT or that the connection is blocked by a firewall. DNS changes cannot repair a rule that intentionally chooses the wrong route.

Local printers, file shares, intranet services, and private IP ranges may stop working if a broad rule captures them. Add or preserve explicit local-network bypass rules according to your environment, and test private addresses before enabling strict routing permanently. The safest configuration is not necessarily the one that captures the most traffic; it is the one whose local exceptions, proxy policies, and DNS behavior are understandable enough to maintain after a Windows update.

Finally, remember that the Windows system proxy and TUN mode can mask each other during testing. Turn one off when evaluating the other, clear stale environment variables such as HTTP_PROXY and HTTPS_PROXY for terminal tests, and restart applications that cache proxy settings. This disciplined sequence prevents a successful browser request from hiding a failed TUN path.

Compared with lightweight system-proxy utilities, which often leave proxy-unaware applications untouched, or older Clash forks whose Windows service and adapter behavior may be inconsistent after system updates, Clash Verge Rev provides a clearer Mihomo workflow for profile selection, TUN control, connection logs, and rule-level verification. Once you understand the permission, DNS, route, and application boundaries described here, you can use those controls instead of guessing at nodes; if you want a maintained client for this Windows TUN setup, visit the Clash V.CORE download page and choose the build appropriate for your system.