Top 10 Outlook Errors and Ways to Fix Them

Avatar Kanishka Sharma Updated On - 12 Feb 2020

What would you do if you are not able to send or receive mails through Outlook? This would be a matter of serious concern for all Outlook users. So, everyone starts looking for methods to solve the issue as soon as possible. Most of the Outlook errors can be resolved just by restarting your system, checking account settings, using scan PST etc. In this article we will be going through common Outlook errors, their causes, and their solutions.

Common Outlook Errors

  1. No connection could be made because the target machine actively refused it.
    This error occurs when the target machine is invalid or the IP address is incorrect.
  2. Microsoft Outlook error codes 0x80070002, 0x8004210B, and 0x800CCC0F.
    The error code 0x80070002 may appear when you try to add or set up a new Outlook email account, and the error code 0x8004210B appears while trying to send mail. And the error code 0x800CCC0F usually appears when an antivirus program is enabled in MS Outlook, or when its settings cause issues.

  3. Error A time-out occurred while communicating with the server 0x800ccc19.
    This error occurs when there is no response from the server.
  4. The server could not be found. (Account: account name, POPserver:’mail’, Error Number: 0x800ccc0d).
    This error doesn’t allow you to send or receive emails in Outlook. It generally occurs due to wrong account settings.
  5. Cannot start MS Outlook
    This error may appear due to corrupted navigation pane settings file i.e., profile name .xml. The size 0KB for Outlook file indicates corruption.
  6. Outlook PST File is not a personal Folder File
    It basically occurs due to sudden system shutdowns or corrupt PST files.
  7. Data error (cyclic redundancy check)
    After Outlook downloads e-mails to your local computer, you may get error messages like:

    • File path\filename.pst could not be accessed. Data error. Cyclic redundancy check
    • Data error (cyclic redundancy check)

    These error occurs due PST file corruption, and you will not be able to view Outlook messages.

    In this condition, you can read our previous post How to repair cyclic redundancy check (CRC) errors using native solutions.
  8. The operation timed out waiting for a response from the receiving (POP) server 0x8004210a.
    This problem arises when POP server time out occurs while waiting for a response from the email server.
  9. Task ‘server name – Sending and Receiving’ reported error (0x800ccc0f). ‘The connection to the server was interrupted. If this problem continues, contact the server administrator or Internet service provider (ISP). The server responded: ? K’.
  10. The file username.ost is in use and cannot be accessed.

This error may occur when multiple users are assessing same .ost file at a time or when some other software is in conflict with Outlook.

Causes for Outlook errors

Most of these Outlook errors occur due to various reasons such as incorrect account settings, oversized Outlook data files, MS Outlook internal application conflict, Windows firewall issues, incorrect Office installation, invalid User Id or password, virus threats, wrong port number for the outgoing (SMTP) server, etc.

Solutions for the Outlook errors

  1. Ensure internet connectivity
    To avoid MS Outlook issues, make sure that your internet connection is proper. Also, check modems and network cables.
  2. Delete suspicious mails from the mailbox
    Any suspicious mail can prove to be hazardous as it may block receiving of error message in Outlook. This can be avoided by deleting those email messages from the ISP’s web-based email program or by contacting them directly.
  3. Check antivirus program’s email scanning settings
    If antivirus has the email scanning feature, then you may have to configure additional settings to make Outlook and the antivirus software work together. You may refer to the antivirus program provider’s website for more information.
  4. Reinstall Outlook
    Reinstalling Outlook can eradicate many Outlook errors.
  5. Increase the server time-out setting
    You can increase server-time out settings to avoid many Outlook errors. For this, follow the below given steps:

    • Start Outlook. Go to Files menu and click Info.
    • Click Account Settings, and select Account Settings.
    • Click and select the target POP3 account; click Change.
    • Click More Settings.
    • In the Advanced tab, increase the server time-out setting.

    Note: The steps are given for Outlook 2010 and later versions. For other versions of Outlook, kindly visit Microsoft sites.

  6. Verify all SMTP address in the distribution list
    You should properly scrutinize all SMTP email addresses in the distribution list to make sure that they are correct. You can validate them by sending test messages.
  7. Clean up the Outbox
    If there are messages in the Outbox, you need to delete them (after switching to offline mode). Also, you can move these messages to Drafts folder to process them again.
  8. Repair PST via Inbox Repair Tool/third-party tools
    You can repair the PST file manually using the Inbox Repair Tool. You can also use a third party tool – Kernel for Outlook PST Repair, which is the best DIY tool to rectify any issues with the PST file. So, troubleshooting Outlook errors is not a gruesome job.

Watch Video: To know Complete Process of Outlook PST Repair Tool