Start Here: Identify Where TikTok Fails
If TikTok will not open, shows a blank feed, or keeps buffering while Clash is running, changing several settings at once makes the cause harder to find. First determine whether the problem is limited to TikTok, affects other apps too, or follows one particular proxy node. Those differences help narrow the fault to routing rules, DNS, the node itself, or the device’s network path.
Run a short, controlled test. Keep your active Clash profile and mode unchanged, then open a few unrelated sites or apps. If they work normally but TikTok does not, focus on TikTok’s rules, domain resolution, and the selected node. If many unrelated services fail, investigate the node, the Clash core, or the system’s proxy and TUN settings before editing app-specific rules.
Next, open Clash’s connection or traffic log while refreshing TikTok. The exact labels vary between clients such as Clash Verge Rev, Clash Verge, and other Mihomo-based apps, but the useful details are similar: the requested host, the rule that matched, the policy group selected, and whether the connection completed or timed out. Note the time of the test and the node selected in the policy group.
Safe Troubleshooting Goal
Find the smallest setting responsible for the failure, confirm the result with logs and repeatable tests, and keep a copy of the original profile before making changes.
There is no single TikTok fix that works for every network. A service may be unavailable on a particular connection or in a particular region, and the app can use multiple domains or connection methods. Use these steps to diagnose your own configuration rather than assuming a particular node, DNS provider, or rule is universally suitable. Follow local laws, your organization’s network policy, and the terms that apply to your connection.
1Check the Rule That Handles TikTok
In Rule mode, Clash evaluates rules in order and applies the action from the first matching rule. A broad rule near the top of the profile can therefore send TikTok traffic to DIRECT, a reject policy, or an unintended group before a later TikTok-specific rule is reached. A correct-looking rule at the bottom does not help if an earlier rule already matches.
Start with the connection log, not with guesswork. Refresh the feed or open a video, then find the new TikTok-related connections. Check the matched rule and policy group shown for each request. If a request is using DIRECT when you expected a proxy, inspect earlier rules for broad domain suffixes, keywords, process rules, or a final catch-all rule. If the request is rejected, look for an ad-blocking or privacy rule that may be matching a necessary host.
When the log confirms the wrong match, add a narrow rule above the rule that is catching the traffic. For example, a profile may support a rule such as:
Replace Your-Proxy-Group with the exact policy group name from your profile. Do not paste the example blindly: providers may use different domains, custom groups, or rule providers, and TikTok traffic can involve hosts beyond the examples. Use the log to identify what your app actually requests. Keep specific rules above general rules, but avoid adding large lists of guessed domains that may route unrelated services unexpectedly.
Pro Tip: Test One Change at a Time
Change a single rule, reload the profile if required, and repeat the same action in TikTok. If the log still shows the old rule or policy, check whether the client activated the edited profile before changing anything else.
Also verify that the selected policy group has a usable node. A rule can correctly select a proxy group while the group itself points to a disconnected node, a stale subscription entry, or an automatic test result that is no longer valid. Select a known working node temporarily, then compare the result. If a manual selection fixes the issue, troubleshoot the group’s health checks or fallback settings rather than adding more domain rules.
2Verify DNS Resolution and Cache Behavior
DNS translates a domain name into an address. If TikTok’s app receives a stale, failed, or unexpected answer, the connection may never reach the route you intended. Clash DNS settings can also interact with the operating system’s resolver, the browser or app cache, and the active network adapter. A DNS issue is more likely when logs show resolution errors, connections fail before a normal proxy request is established, or a restart temporarily changes the result.
Check whether DNS is enabled in the active configuration and whether the client reports errors for the affected host. In a Mihomo-based setup, the DNS section may look broadly like this, but use it only as a reference and preserve provider-specific settings:
fake-ip and redir-host behave differently, and a configuration that works on one network may not be suitable on another. Do not switch modes simply because TikTok is buffering. First inspect the logs and client documentation, and verify that the selected DNS servers are reachable from your network. If your profile manages DNS automatically, editing the generated configuration may be overwritten at the next subscription update; use the client’s supported override or configuration merge feature where available.
After a DNS change, reload the active profile and restart the app or clear its network cache if the client provides that option. On a phone, force-close TikTok and reopen it; on a desktop, close the affected app or browser fully before testing again. A cached answer can make a working configuration appear broken, while a one-time successful response can also hide a recurring resolver failure. Compare several attempts and check whether the connection log shows a fresh lookup.
Avoid Unverified DNS Edits
Do not add random public resolvers, disable DNS protection, or copy an entire DNS block from an unrelated profile. Incorrect resolver settings can affect every app, leak queries outside the expected path, or break local network access.
If only one domain fails, compare the DNS result and connection outcome for that host with another network or node, where permitted. If many domains fail together, the issue is more likely a general resolver or connectivity problem than a TikTok-specific DNS rule. Restore the original DNS configuration if a test makes other services less reliable.
3Test the Proxy Node and Policy Group
A routing rule can be correct while the selected node is overloaded, unreachable, or unable to establish the type of connection the app needs. Symptoms can include videos that start and stop, the feed loading while media does not, or requests that time out only during busy periods. These signs do not prove that the node is the cause, so compare results systematically.
- Keep the same Clash mode, DNS settings, and TikTok action for each test.
- Choose one alternative node in the same policy group, then retry the same feed or video.
- Review the connection log for connection timeouts, TLS errors, rejected requests, or a different rule match.
- Return to the original node and repeat once to see whether the difference is consistent.
If one node consistently works and another does not, the likely issue is node reachability, capacity, or the route to the service—not necessarily your YAML rules. Check the provider’s service status and subscription information, and avoid repeatedly switching nodes during a single test. If every node fails but other apps work, return to the domain and DNS checks. If all traffic fails, verify the subscription, core status, and internet connection first.
Latency tests can help compare responsiveness, but a low ping does not guarantee that TikTok media will load. A ping test may use a different destination or protocol from the app’s actual requests. Treat the connection log and a repeatable in-app test as stronger evidence than a single latency number.
Pro Tip: Preserve a Known-Good Baseline
Before modifying a subscription profile, export or duplicate it if your client allows it. A baseline makes it easier to undo an unsuccessful rule or DNS change and helps isolate which edit affected the result.
4Use TUN Mode Only When the Traffic Path Requires It
TUN mode creates a virtual network interface so Clash can capture traffic that may not follow the system’s ordinary HTTP or SOCKS proxy settings. It can help when an app ignores the system proxy, but it also introduces another layer to diagnose: virtual adapter status, operating-system permissions, route installation, and possible conflicts with other VPN or network-filtering software.
First test TikTok with the simplest supported setup. If the app works through the system proxy, there may be no reason to enable TUN. If the logs show no TikTok traffic at all even though the app is active, the app may not be using the system proxy. In that case, TUN may be a useful test, provided the client and core support it on your platform.
Before enabling it, check that the current core supports TUN, grant the permissions requested by the client, and close or disable other VPNs and network filters temporarily if your environment allows. Enable TUN using the client’s own controls rather than manually copying settings from a different operating system. Confirm that the virtual interface is reported as active, then inspect whether TikTok requests appear in the Clash log. If the interface fails to start, resolve that error before changing DNS or rules.
When TUN is active, verify both app traffic and ordinary connectivity. Test a normal website, a local service such as a printer or router page if relevant, and TikTok. If general internet access stops, turn TUN off to restore the previous path, then review the client’s error message and route settings. Do not leave an unstable TUN configuration enabled just to keep experimenting; it can disrupt unrelated applications or access to local devices.
Permission and Conflict Check
On desktop systems, TUN may require administrator or system-extension approval. On mobile platforms, VPN permissions and per-app settings vary. Use the official client’s prompts and platform documentation; do not install unknown certificates or disable security controls to make a test pass.
If TUN fixes the issue, compare the connection log and settings before deciding to keep it on. The result suggests that traffic capture was part of the problem, but it does not by itself identify whether the root cause was an app bypassing the system proxy, an incorrect route, or a conflicting network setting. Keep only the changes necessary for your setup.
5FAQ: TikTok and Clash Troubleshooting
TikTok works in a browser but not in the app. What should I check?
The app and browser may use different network paths, cached DNS answers, or connection behavior. Check the Clash log while opening the app. If no app traffic appears, verify whether the app honors the system proxy; a supported TUN setup may help capture it. If traffic appears, compare its matched rule and selected policy with the browser’s connections. Force-close and reopen the app after each controlled change.
Why does the feed load while videos keep buffering?
The feed and video media can involve different hosts or connections, and one node may handle small requests while struggling with sustained traffic. Inspect the log while a video is buffering, confirm the actual media-related requests and their matched policies, then compare one alternative node. Avoid assuming that a single domain rule covers every request; use observed traffic and your profile’s supported rules.
Should I switch to Global mode?
Global mode can be a temporary diagnostic if your client provides it: it helps determine whether rule selection is involved. Use a known working proxy group, test briefly, and then return to your normal mode. If Global mode changes the result, review the rule log and correct the specific mismatch instead of leaving a broad routing mode enabled without understanding its effect.
When should I reset or replace my Clash profile?
Consider restoring a known-good copy when the active profile has invalid YAML, repeated core errors, or a long history of uncertain edits. Before replacing it, confirm that the subscription is current and save any custom rules you need. If a clean profile also fails on every node, investigate the network or provider status rather than repeatedly rebuilding the configuration.
Work through the checks in order: identify the scope of the failure, inspect the matched rule, verify DNS, compare nodes, and test TUN only when the traffic path calls for it. Record what changed and restore the baseline if a step makes connectivity worse. This method is safer and more reliable than applying broad rules or changing several network layers at once.