How to fix Outlook Express error 0x800CCC90
This article describes what Outlook Express error 0x8000CCC90 is and how it can be fixed to get Outlook Express working again. The instructions provided here are reliable and correct to date. However, it is recommended that you follow them carefully to avoid problems with Outlook Express.
“There was a problem logging into your mail server. Your username was rejected. Account: ‘pop3.example.com’, Server: ‘pop3.example.com’, Protocol: POP3, Server response: ‘- ERR ‘, Port: 110, Secure (SSL): No, Server Error: 0x800CCC90 “. This error message occurs when you try to log into your email account, but the POP3 mail server rejects your username or password due to a typing or non-verification error, among other reasons. To correct this error message, you must modify the properties of your e-mail profile in Outlook Express. Here’s how you can do this with this free Outlook Express support guide.
Instructions:
Open Outlook Express by double-clicking the shortcut icon on the desktop. If there is no shortcut on the desktop, click the Start menu and search for All Programs, Outlook Express. When you’re in the Outlook Express window, click the Tools menu at the top and choose Accounts. You will see the Internet Accounts dialog. Click on the Mail tab (if it is not already highlighted), click to select your email account, and then press the Properties button (on the right side).
When you are in the Properties window, click the Server tab and check the incoming (POP3) and outgoing (SMTP) mail server settings. For example, you are using a Gmail account; the incoming mail server will be ‘pop3.gmail.com’ while the outgoing will be ‘smtp.gmail.com’. Check the account name and password. Your account name is your full email address. Make sure it is spelled correctly. Please verify your password, remove it, and retype it without making any typographical errors. If you recently changed your password, please update it here in the Password box and check the Remember password box. An incorrect password entry can lead to this Outlook Express error message.
If the Log in with strong password authentication box is checked, uncheck it. Under the Outgoing mail server heading, check the My server requires authentication box. Now click on the Advanced tab and check the server port numbers for the incoming and outgoing mail servers. They should be those provided by your ISP (Internet Service Provider). Verify that the correct port numbers have been entered. You can also update them by deleting and re-entering them. Check the server timeouts. When you have finished making the necessary changes to your settings, press the Apply button to save them and then the OK button to exit the Properties window.
Close Outlook Express and reopen it. It will update the changes and the Outlook Express error will disappear. If the problem persists, use this method. Open the command prompt from the Start menu> All Programs> Accessories. You can also use the Run utility to open the command prompt. When at the command prompt window, type ‘netsh int ip reset c: resetlog.txt’ (without quotes and as is) and hit the Enter key. Please wait while the command runs. When done, close the command prompt by clicking the X button in the upper-right corner of the window.
Additional Information:
Often times, a virus or malware infection such as a Trojan horse or spyware, etc. Hidden in an email can also lead to error 0x8000CCC90 in Outlook Express. So, don’t forget to run a full virus scan from your antivirus program. You can also run a free online virus scan from a trusted website like Trend Micro. When the scan is complete, delete any infected files. Don’t forget to empty the Recycle Bin.