You open web.whatsapp.com and the page just sits there. The loading bar never finishes, or your chats appear and then a yellow notice says 'Computer not connected'. Or it worked yesterday and today it is asking you to link your phone all over again.
This rarely means anything is wrong with your account. WhatsApp Web is a linked device: a browser session that needs a supported browser, a network that lets it through, and a link to your phone that hasn't expired. WhatsApp's help pages don't have an entry for the loading screen itself, but they say the most common reason for connection trouble is a poor internet connection. Start with whatever is on your screen:
- The page never finishes loading and shows no message: start with causes two and three.
- 'Browser not supported': cause one.
- A yellow 'Computer not connected' notice: cause two.
- It worked before and now asks you to link again: cause four.
- Chats open but are missing or slow to appear after linking: cause five.
- A 'Network timed out' or 'Validation Failure' warning, or anything that started after installing an extension: cause six.
- The page loads but the QR code won't scan: that is a separate problem with its own fixes, covered in our post on the WhatsApp Web QR code not scanning.
Cause 1: Your browser is out of date or not supported
WhatsApp's 'Browser not supported' page recommends Google Chrome, Mozilla Firefox and Microsoft Edge, and says it also supports Opera and Safari, with Safari limited to macOS 11 or newer. Its help pages add that you need the latest version of your browser, and that Internet Explorer is not supported.
An older computer that can't update its browser any further can run into this even with a browser on the list, so update first and then reload the page. If updating doesn't help, install one of the recommended browsers and try web.whatsapp.com there. If it works straight away, the problem was in your old browser or its settings, not your account or your network.
Make a free OneSol page: one link for Instagram, TikTok, WhatsApp and YouTube, with your forms and payments on the same page.Create your free page →Cause 2: The network is weak or blocks WhatsApp
WhatsApp says the yellow 'Computer not connected' notice means the computer probably has no active internet connection. Note that it is the computer's connection in question, not the phone's. Check that other websites load in the same browser.
If everything else loads and WhatsApp doesn't, suspect the network itself. WhatsApp's help page singles out office and university campus Wi-Fi as a cause of connection issues, because those networks can block or limit it. A page that hangs at work and loads fine at home fits this pattern exactly.
- Try a different Wi-Fi network, or a hotspot from your phone. WhatsApp suggests this directly, and it is the fastest way to find out whether the network is the problem.
- On a managed network, ask your IT admin to let traffic to 'web.whatsapp.com' and '.whatsapp.net' through. These are the addresses WhatsApp's help page names. The block may be deliberate, so ask rather than work around it.
- If you use a VPN or proxy, turn it off briefly and reload. This isn't a step from WhatsApp's connection page, but it is a quick test of whether the route is the issue.
Cause 3: The browser session has gone stale
If the network is fine and the browser is current, the saved data for the page may be the problem. WhatsApp's fixes for this go from least to most disruptive, so work down in order and stop when it loads.
- Refresh the page.
- Clear your browser's cache and cookies. WhatsApp points you to your browser's own support site for the steps. You may need to link your phone again afterwards.
- Log out of WhatsApp Web and log back in. In WhatsApp Web, open the menu above your chat list, then choose 'Log out'. If the page won't load far enough to do that, log the device out from your phone instead, as described in the next section.
- Restart the computer.
- If you use the desktop app rather than the browser, WhatsApp's equivalent steps are to quit and restart the app, log out and back in, and then reinstall it.
Cause 4: The linked device was logged out
If WhatsApp Web keeps going back to the linking screen, the session has ended rather than failed to load. WhatsApp's help pages say linked devices are logged out if you don't use your phone for over 14 days. Its 'About linked devices' page also mentions an automatic disconnect after 30 days of inactivity, without saying how the two figures fit together, so plan around the shorter one.
There are other causes too. Registering your number again, whether on a new phone or to recover the account, logs out every linked device. WhatsApp also says a restricted account can't use linked devices, and that you may be logged out of some of them. If your phone itself shows 'You have been logged out', deal with that first: WhatsApp lists a changed phone or number, and more than 120 days of inactivity, as the causes. To clear an old session and link again:
- Open WhatsApp on your phone and check that it works normally.
- On Android, tap the three dots for 'More options', then 'Linked devices'. On iPhone, go to 'Settings', then 'Linked devices'.
- If the computer is still listed, tap it and choose 'Log out'.
- Tap 'Link a device' on Android or 'Link device' on iPhone, and confirm with your fingerprint, face or phone PIN if asked.
- Scan the QR code on the computer. WhatsApp Web also lets you link with your phone number and a one-time eight-character code instead.
- If the browser asks for a passkey, create or use one to continue. WhatsApp notes that private or incognito windows, and some corporate browsers, can interfere with passkey linking, so use a normal window if this step fails.
- You can link up to four devices at a time, so remove any you no longer recognise while you are there.
Cause 5: The phone is offline, out of date or still sending your chats
Older advice says your phone has to stay online for WhatsApp Web to work. That is no longer how it works. WhatsApp says linked devices, including Web and Desktop, work even when your phone isn't online, so a phone with a flat battery is not normally why the page is stuck.
The phone still matters at two moments: when you link the computer, and right after. WhatsApp says your phone sends a copy of your recent history to a newly linked device, and that it can take a few minutes for it to appear, depending on how many messages are in your chats. WhatsApp Desktop also syncs more history than WhatsApp Web, so older messages can be missing in the browser. To see your full history, check your phone.
If the phone itself is struggling, fix that before you link again. These steps come from WhatsApp's guide to sending and receiving problems:
- Load a website on the phone to confirm that Wi-Fi or mobile data is working, and move somewhere with a better signal if not.
- Turn airplane mode on and off to reset the connection.
- Restart the phone.
- Update WhatsApp to the latest version from your phone's app store.
Cause 6: A browser extension is getting in the way
WhatsApp's help pages warn that other active browser extensions may be able to read or change what is shown on WhatsApp Web. If you use its Code Verify extension, you may see this as a warning. 'Network timed out' can point to an unstable connection or something disrupting the check on the page, and 'Validation Failure' can be caused by another extension interfering. WhatsApp's fix for both is the same: pause your other extensions, run the check again, turn them back on, and reload WhatsApp Web if the warning remains.
Even without Code Verify, extensions are worth ruling out if the trouble started after you installed one. Ad blockers and chat tools that add features to WhatsApp Web are the first ones to try, though that suggestion is ours rather than WhatsApp's. Turn them all off, reload, then turn them back on one at a time until the problem returns.
Take the warnings seriously if they don't clear. WhatsApp says that when a 'Network timed out' warning persists, your messages on the web might no longer be private, and it advises logging out of WhatsApp Web or using the mobile app instead.
Prevent it next time
Most repeat problems come from a few habits, and they are easy to change.
- Open WhatsApp on your primary phone at least once every 14 days, which is the rule WhatsApp gives for keeping linked devices connected.
- Keep your browser and the WhatsApp app on your phone updated.
- Keep extensions on the browser profile you use for WhatsApp to a minimum.
- If you rely on WhatsApp at a workplace or campus, ask IT about access before a busy day, not during one.
- Check 'Linked devices' on your phone now and then, and log out of anything you don't recognise.
- Consider installing WhatsApp Desktop as a backup on a computer you use daily. It syncs more history than the browser version.
If customers reach you on WhatsApp
When WhatsApp is how customers contact you, it helps not to depend on a single channel when it plays up. A free OneSol page gives them one link to reach you on WhatsApp and elsewhere, and it can collect emails so you can still get in touch with them.