If your smart plug keeps going offline, the cause is usually weak or crowded 2.4GHz WiFi, interference at the outlet, or a router setting. Try the fixes in order, cheapest first: unplug it for a minute, move it to another outlet, check the signal, then test it on a 2.4GHz guest network before you touch router settings or reset it.
First, Work Out Where the Problem Is
Before you change anything, look at what else is acting up. This one check saves a lot of time.
| What you see | Likely area | Start with |
|---|---|---|
| One plug is offline, other devices are fine | The plug, its outlet, or its signal | Fixes 1 to 3 |
| Several smart devices drop at once | Your router or WiFi | Fixes 4 and 5 |
| Works after a restart, then drops again | Signal, interference, or router settings | Fixes 2 to 5 |
Screenshot this table before you start.
Smart Plug Keeps Going Offline: Fixes in Order
1. Unplug it for a minute. A hard power cycle forces the plug to rejoin your network. A Wyze forum user explained that these plugs reset when unplugged because they have to reconnect and log back in. A TP-Link Kasa user reported that a quick power cycle didn’t help, but the plug reconnected immediately after being left off overnight. If that works, you’ve confirmed it’s a connection problem, not a dead plug.
2. Move it to a different outlet. It sounds too simple, but it comes up in forums. A Wyze user said that moving two plugs to different outlets restored normal operation, and in one case just switching from the bottom to the top receptacle fixed it. On a MikroTik forum, a poster suggested that smart plugs are sensitive to interference carried through the mains, and that moving them to a different wall socket or taking other devices off the same power strip sometimes solved it. These are individual experiences, not proven causes, but this fix costs nothing.
3. Check the signal at the plug. TP-Link staff, replying in a Kasa forum thread, suggested confirming the plug’s signal strength. Stand at the outlet with your phone on your 2.4GHz network and see how strong it is. Most smart plugs use 2.4GHz only, and that band struggles through walls. A WiFi extender or moving your router closer may be the real fix.
4. Test it on a 2.4GHz guest network. This is another TP-Link staff suggestion. Create a separate 2.4GHz guest network, join the plug to it, and see if it stays stable. If it does, you can leave it there. If it also drops, the problem is the plug or its location, not your main network settings.
5. Look at router settings. Forum users report trying these, with mixed results:
- Longer DHCP lease time. One Kasa user set it to the maximum, though the thread doesn’t confirm it fixed the problem.
- A different 2.4GHz channel. A MikroTik poster tried this and it didn’t help in their case.
- Band steering or “Smart Connect” off, and a fixed IP for the plug. One troubleshooting guide we reviewed recommends these, but it cites no sources and describes no testing, so treat them as things to try, not proven fixes.
Change one setting at a time and give each one a day, or you won’t know what worked.
6. Update the firmware. Open the plug’s app and check for an update. This is a standard step, though the threads we read don’t show a specific firmware fix.
7. Factory reset and re-pair. Hold the plug’s reset button until it blinks, then set it up again. Do this late in the list because you’ll lose its schedules and settings.
8. Replace it. If one plug keeps failing in several outlets and on a guest network while your other devices are fine, the plug itself may be the problem. A Wyze forum user said the older, pre-2021 Wyze plugs were notorious for dropping offline and that the 2021 version fixed much of it. That’s one user’s view, but it’s a reminder that the model matters.
What We Don’t Know
Forum threads don’t agree on one root cause. A Wyze user admitted the cause “remains the mystery,” and a Kasa user’s question about whether anything changed on the maker’s servers got no staff answer before the thread was locked. We haven’t tested these fixes ourselves. They’re drawn from what staff and users reported.
Will My Schedule Still Run?
If the plug stores its schedule on the device, it may keep following it while the connection is down. We explain the difference in our guide on whether smart plugs work without WiFi. If you rely on a plug for travel, see how smart plug vacation mode works and test it before you leave.
Shopping for something more reliable? Our no-subscription smart plug picks cover the brands we’d start with, though none of them are immune to WiFi problems.
👉 Browse Kasa Smart Plugs | Browse WiFi Extenders
Frequently Asked Questions
Why does my smart plug keep going offline? Common causes are weak or crowded 2.4GHz WiFi, interference near the outlet, and router settings. Forum reports don’t point to a single cause, so work through the fixes in order.
How do I get my smart plug back online? Unplug it for a minute, then plug it back in. If it drops again, try a different outlet, check the signal at the plug, and test it on a 2.4GHz guest network.
Do smart plugs work on 5GHz WiFi? Most smart plugs need 2.4GHz WiFi. Check your plug’s specifications before you buy.
Should I factory reset my smart plug? Only after the simpler fixes. A reset erases its schedules and settings, so you’ll have to set it up again.
Is my smart plug broken if it keeps disconnecting? Not necessarily. If it fails in several outlets and on a guest network while your other devices stay connected, the plug may be faulty. Otherwise, the signal or network is the more likely cause.
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Sources: TP-Link Community — Kasa smart plugs disconnecting from WiFi | Wyze Forum — Wyze plug offline with good power and Wi-Fi | MikroTik Forum — Smart plug continuously disconnects from WiFi