Could Not Sign In: Unknown Error

Could Not Sign In: Unknown Error

There are so many reasons why this error could happen. First thing to consider is you might have problems in your internet connection. Sometimes internet connections responding too slowly then yahoo server could not reply that is why you received this error. Solution for this is contact you’re Internet Service Provider or set-up your LAN if your internet connection is shared to LAN.

Some reason is, your yahoo messenger might beg damaged. Some files might be corrupted.  Re-install your yahoo messenger.

Yahoo messenger are using cookies for some reason, corrupted cookies might be damaged. Try cleaning your cookies. To clean your cookies is simply opening your Internet Explorer then delete cookies on the options menu.

Could Not Sign In: Unknown Error

If all the computers in the house are showing this error, try clearing your browser’s cache. In your web browser, press CTRL + SHIFT + DEL to bring up the “Clear browsing data” dialog. Check the items for “Browsing history”, “Download history”, “Cookies and other site data”, and “Cached images and files” then click “Clear browsing data”. After this, close your browser and open it again.

Log in to your Yahoo account then see if it works. If this fixed the problem, do this also on the remaining computers. But if this doesn’t work, check the network cable at the back of your CPU. Try to unplug the network cable from the network port then plug it back in.

Next, open your web browser and visit a website then try clicking some links and verify that your connection is working. If this doesn’t work and your computer is connected to a router, try resetting the Wi-Fi router. If the router has a power button, press it to turn it off then unplug it from the power for about 10 to 20 seconds.

Press any button on the router to drain any leftover power or to power cycle. After this, plug the router back to the power and turn it on. When the router is ready, try logging in to Yahoo again then see if it works.