Just My Socks Not Connecting? Fix VLESS/Reality and Client Update Issues
Sun Oct 25 2026
If Just My Socks worked before but now fails on one device, first check whether that device still has an old Shadowsocks entry or an outdated client. Do not immediately delete your subscription, change every setting, or buy another plan. The September 2026 announcements describe two different changes; identifying which one applies makes troubleshooting much easier.
This guide was checked on October 25, 2026. The sequence below is a diagnostic method, not a promise that every connection problem comes from the update.
What changed in September?
On September 25, 2026, Just My Socks announced that s2 moved from Shadowsocks to VLESS/Reality. The announcement says s3, s4, s5, and s801 had already moved. An old Shadowsocks entry for s2 no longer connects; subscription users need to refresh their existing subscription. The subscription URL itself did not change. This particular migration affected s2, not every server at once.
On September 28, a separate server security update affected s2, s3, s4, s5, and s801. Some older client versions were no longer supported. The official remedy was to update the application and, where separately managed, its Xray core, then restart. That security update did not change subscription URLs or connection settings. If your connection works normally, the announcement requires no action.
Start with the symptom
| What you see | First thing to check |
|---|---|
| An old s2 Shadowsocks entry fails | Refresh the subscription and select the new VLESS/Reality entry. |
| The same server works on your phone but not your computer | Compare application and core versions on those devices. |
| The client reports an unsupported protocol or cannot import an entry | Check VLESS/Reality support; a Shadowsocks-only application is insufficient. |
| The proxy connects, but one website or terminal tool fails | Test application routing, DNS, and service availability separately. |
| Every device and server fails | Check account status, quota, local connectivity, and official service notices. |
A practical recovery sequence
1. Confirm the basics without changing configuration
Check that the service is active and has remaining traffic. Set the device’s date and time correctly. Confirm ordinary internet access, then note the failing server label, application version, core version, and error message.
Compare the same server on the same local network with a second device if available. Comparing your computer’s s2 against your phone’s s1 does not isolate a client problem. Change one factor at a time so that a successful test tells you something useful.
2. Update a compatible application and its core
Get the current client from its official project. The JMS announcement recommends Jamjams or a VLESS/Reality-capable v2rayN. Other clients require explicit support for that protocol and compatible subscription formats. A client that supports only Shadowsocks cannot use a VLESS server merely because the password was copied correctly.
Some applications update the interface and networking core separately. If yours exposes an Xray core update option, check it too. Then fully exit and reopen the application. Avoid old download bundles and unofficial repackaged installers. Keeping an existing subscription is preferable to reinstalling before you understand the fault.
3. Refresh the original subscription
Use your client’s subscription refresh function. Check that the update actually succeeded, then select the refreshed s2 entry and inspect its protocol. For the migrated entry, expect VLESS/Reality rather than the obsolete Shadowsocks configuration.
Do not invent new ports, credentials, public keys, or TLS values. If the profile still looks outdated, compare it with the subscription information in your service dashboard. Treat the subscription URL as a secret: it can contain access credentials, so do not post it in public converters, screenshots, or support forums.
4. Separate connection failure from application failure
Test a normal web page through the selected proxy before testing your target service. A successful proxy connection does not guarantee that a particular platform is available to your account or region. If only a terminal application fails, follow the Claude Code terminal proxy guide. If you use Mihomo, see the native Clash Verge subscription guide.
If the problem persists, send official support the time, server label, operating system, client/core versions, and a redacted error. Remove subscription tokens, passwords, and account identifiers. Preserve your working profile while testing.
Choosing a service after troubleshooting
An expired plan or a device limit is a separate issue from protocol compatibility. Compare the available plans against your traffic and device needs before ordering. JMS supplies proxy connectivity; it does not promise a dedicated or residential IP, unrestricted platform access, or protection against account suspension.
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