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When I try to get messages in email, I get the message "Sending password did ot succeed; Mail server pop 3.frontier.com responded (SYS/TEMP) server error

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When I try to get messages in my email account, put in my password and get the message "Sending of password did not succeed. Mail server pop 3.frontier.com responded (SYS/TEMP) server error." I also get "login to server pop 3.frontier.com failed". This happened several months ago and I had frontier set all settings and do all they could and it didn't help. A few days later, it started working. Now it has happened again. Last week, I got this message for 2 days, then it started working again and worked for 3 days. Yesterday, it did not work again. Today, my Windows did an update restart, and when it got done, all my email messages were there and I can respond to them. However, I still get the message if I go into "Get messages". Please help with this sporadic problem, which are the worst kind. Thank you

When I try to get messages in my email account, put in my password and get the message "Sending of password did not succeed. Mail server pop 3.frontier.com responded (SYS/TEMP) server error." I also get "login to server pop 3.frontier.com failed". This happened several months ago and I had frontier set all settings and do all they could and it didn't help. A few days later, it started working. Now it has happened again. Last week, I got this message for 2 days, then it started working again and worked for 3 days. Yesterday, it did not work again. Today, my Windows did an update restart, and when it got done, all my email messages were there and I can respond to them. However, I still get the message if I go into "Get messages". Please help with this sporadic problem, which are the worst kind. Thank you

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Please uninstall Firefox. Then Delete the Mozilla Firefox Folders in C:\Program Files and C:\Program Files(x86) Then restart system. Then run Windows Disk Cleanup. (Note: This should be Pinned and run Weekly, If never done below expect 10's of gig's) Then run it again and click the button that says Cleanup System Files. Note: your Firefox Profile is saved. But you should make a back up before you do :

Reinstall with Current Release Firefox 57.0.4 with a Full Version Installer

Please let us know if this solved your issue or if need further assistance.