How To Solve 0x800cc78

How To Solve 0x800cc78

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    In recent days, some of our users have encountered the 0x800cc78 error message. This issue occurs due to several factors. We will review them now.

    “I got all the errors when I tried to sign in or use Microsoft Outlook:
    Sending an error message “Error (0x800ccc78): send fromcommunication. Please check your mailing address in your account properties. The server replied: 5.0.0. Access denied”.
    I restarted my system, thinking that every error could be fixed, but to no avail. Please help me fix this error.

    Does Outlook throw error 0x800ccc78 when composing an email? This error usually appears as an Outlook send or receive error 0x800ccc78. It has been noticed that when this error occurs, users most often restart Outlook without knowing the reason.

    This error mainly indicates that, in particular, the input of the outgoing server details is incorrect. Here

    So, we’ll talk about the various possible methods to fix Outlook error 0x800ccc78. But let’s first discuss the possible causes of this situational error.

    Cause Of Outlook Error 0x800ccc78

    How do I fix error 0X800CCC78 in Outlook?

    Step 1: Click File.Step 2: In the Account Settings section, go to the Email tab.Step 3: Double click on your letter.Step 4: Check your outgoing settings: Here you need to make sure that two settings are set correctly.Step 5: Now click OK.


    This error mostly occurs when there is a problem sending authentication between email messages. The Internet Service Provider, also known as the Internet Service Provider, is responsible for sending or using the data as it determinesWhich are important ports for synchronizing the connected networks through which these send/receive means occur. By default, emails sent from Outlook use 25 plugins.

    However, the problem occurs when an ISP blocks its port number and replaces it with a different one. If the ISP blocks ports 25 and 587, an Outlook error 0x800ccc78 occurs.

    Another issue occurs when the “My outgoing server (SMTP) requires authentication” setting is disabled. Make sure you enable it, you usually don’t allow contact information to be shared over the web.

    So we’ve explained two different scenarios for Outlook error 0x800cc78. Let’s see how to solve them.

    “Outlook Error Returns 0x800ccc78 When Sending Email”: Fixed

  • Method 1: Enable the SMTP option
  • Your “My outgoing server (SMTP) requires authentication” option may not work correctly. Enable it by following the steps in the following sections:

  • Open Microsoft Outlook and click “Tools” then “Account Settings”.
  • Note. Sometimes Account options are usually found in the File menu bar.

  • You need to open the account settings window by clicking the email option.
  • The Add New Email Account window appears. Click “More” – “Settings”.
  • The Internet mail settings screen appears. Check the box “My outgoing mail server (SMTP) requires authentication” “Use the same settings as the actual incoming mail server”. €.
  • Click OK.
  • Now restart this Outlook and try sending email again.
  • Method 2: Change the port number to 587
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  • Another possibility that Outlook is showing error 0x800ccc78 when sending information is that the port number has been accidentally changed by the ISP. Change them by doing the following:

  • Open the Outlook application. Click “Tools” and select “Account Settings”.
  • In the Account Settings window, click Edit.
  • Click “More settings” on “Add new account”Enter Email” and then to the “Advanced” tab.
  • You will see the port pins for IMAP and SMTP, set your own port number 587 for the outgoing mail server (SMTP) and click OK.
  • Click Next next to Finish.
  • Method 3: Restore the PST file using the Inbox Repair Tool
  • How do I fix error 0x80042108?

    Solution #1 – Restart Microsoft OutlookSolution #2 – Reinstall Microsoft OfficeFix #3: Delete and re-create your email account.Fix #4 3) Disable your antivirus program.Fix #5 (space) Uninstall/remove antivirus program.Fix #6 – System Restore.Fix #7 – Check the default gateway.Fix #8 – Repair Corrupted System Files.

    The above method can definitely fix your “Outlook Error Judgment 0x800ccc78” error, but if it goes wrong, your PST file is most likely unreliable. Check it out by doing the following. The first thing the Inbox Repair Tool prompt shows is the background of the PST file that helps scan.
    Path in Outlook 2013, 2016, and 2019:

    An Instant Way To Recover PST Files

    How do I verify my email in account properties?

    Sign in with the Manage – Microsoft sign-in method.All unconfirmed aliases have a Verify button next to them.Next to your email address, click Verify, then click Send Email.

    The manual method is a good way to repair a corrupted Outlook data file, but before using this tool, players should first know where Scanpst is likely to be located. And also, some users have acknowledged that this tool is not necessarily capable of fixing severe corruptions of these particular PST files. So in this case you can trySysTools Outlook Files Data Repair Tool.

    Download Now Buy Now

    This tool allows you to repair any damage. The tool also allows you to recover encrypted files.

    -IMAPC:UsersadminAppDataLocalMicrosoftOutlookost.ost.-POP3C:UsersadminDocumentsOutlook Filespst.pst

    The newest version of Outlook and below will create 2 PST files, the path to these PST files is as follows:

      - IMAPC:UsersadminAppDataLocalMicrosoftOutlookpst.pstC:UsersadminDocumentsOutlook Filespst

  • Now open Outlook, navigate to the location of the new file, double-click the SCANPST.exe file and open it.
  • Now navigate to the desired PST location on your website, or enter the PST name manually.
  • Click one of our start buttons to start modeling the downloaded PST file.
  • Scan methods are run to check file stability.
  • If your file is incompatible, suggestions will be generated in the next window.
  • Click Repair if your file is incompatible. Or, if the file is consistent, a query will be generated to make sure your PST file is usable.equals.
  • Output:


    “Outlook is getting error 0x800ccc78 when sending records” is one of the daily errors that users face when sending emails in Outlook. It can be easily posted when you know the specific cause of this error. The blog talks about the various possible causes of Outlook error 0x800cc78 and various possible solutions to fix the following error.

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