Move closer to the router and see if that helps – if so, think about moving your router or getting a repeater unit. The AirPort icon in your menu bar will show you the strength of the signal – if this is only one or two bars, the problem could be that it's too weak where you are. Have you got loads of browser extensions running? In Safari, go to Preferences > Extensions and uninstall the lot and reinstall the vital ones one at a time.
Or could someone be hogging bandwidth? If it is only your Mac, is Software Update downloading in the background? Could something else be running?Īlso, go to Safari > Reset Safari… and tick every box. When you find them, delete them.ĭ-When you are done, restart the Mail app.Is it slow on every computer in your house? If so, it could be to do with the network or internet connection as opposed to your Mac. Find also certificates with a red X mark saying “This certificate was signed by an untrusted issuer” or “This certificate was signed by an unknown authority”. Expired / revoked certificates will have a red X sign. Here is how you can fix it:Ī-Launch Keychain Access (Applications > Utilities).Ĭ-Now, find expired / revoked certificates, if any. If this solutions does not solve your issue, read on.Ģ-Expired / revoked SSL certificates may cause this problem. It is known that sometimes antivirus software may cause this problem. If you are having this issue, here is how you can troubleshoot:ġ-Try temporarily disabling your antivirus software. You may also see experience this problem when you want to send or receive mails, because Mail app on your Mac may not connect to your email account.Įven though this error message says this could be because of network or proxy setting issues, users have stated that they are experiencing this problem when in fact there’s no network connection or proxy issues. This could be because of your network configuration or your proxy settings. Users receive the following error message:įailed to verify the server certificate. Several Mac users have reported an issue in which email accounts (Yahoo or Gmail etc) cannot be added. Facebook Twitter Pinterest LinkedIn Print Email
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