Yahoo mail is globally used on a large scale because of the great features it offers. There are various technical errors which you may face while using Yahoo. All such technical errors can be resolved by contacting tech experts via Yahoo customer support phone number. Some of the common errors that you may face while using Yahoo email service have been listed below: Temporary Error 1- User Open Failed Temporary Error 2- Mailbox Open Failed Temporary Error 6- Invalid Request Temporary Error 14 Temporary Error 15 Temporary Error 16 There are many more possible errors that can take place when you work with Yahoo. You can also try the troubleshooting tips to resolve all such temporary errors with Yahoo: Launch a web browser and go to Yahoo’s official website. Log out of your Yahoo account if you are already logged in.