How to Fix Outlook error message 0x800ccc78?

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A number of Outlook users use this application to send or receive emails. But still Outlook users have to face error while performing their common tasks like sending emails, saving outlook data, storing Outlook items, scheduling tasks etc. One of the common PST errors is Outlook error 0x800ccc78. It is such a common Microsoft Outlook error generally appears when your email address is rejected by the SMTP server. Most often due to incorrect or invalid recipient, corrupt Windows files, incorrect Outlook express setup users have to face problem while accessing Outlook PST files.

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In 90% cases this error occurs because of system problems like incorrect registry settings, missing dll, exe, vxd, ocx, dll or other important files, attack of spyware, viruses and misconfigured system settings. It is highly recommended to scan your PC using advanced system cleaner tool to fix this problems. Download Regcure Pro and scan your entire PC.

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When this error occurred with your Outlook version then it becomes difficult to manage Outlook tasks. You will observe some common problems due to this behavior of Outlook. Some of them are:

  • Unable to send or receive Outlook emails
  • Fails to store PST items like emails, contacts etc.
  • Outlook Error message pop-ups again and again.
  • Getting 0x800ccc78 error message while accessing PST files.
  • Slow running Outlook application
  • Outlook gets freeze

For all the above conditions of Outlook some certain reasons are responsible. Some of the common causes of Outlook error 0x800ccc78 are:

  • Using invalid user id and password with Outlook account.
  • Incorrect settings of SMTP
  • Corrupt or damaged Outlook files
  • Missing Outlook files
  • Oversized Outlook PST files
  • Wrong Outlook settings

One of the most common clues behind Outlook error 0x800ccc78 is SMTP requires authentication whenever you try to send or receive emails using Outlook server. In order to overcome this error message you can check server tab and verify the Outlook settings. If there was problem of incorrect settings then Outlook express error 0x800ccc78 probably solved. But when there is corruption with PST file or Outlook data gets corrupt then you need to perform PST repair to fix this issue.

Download PST Repair Tool
Compatible with Outlook 2000, 2002, 2003, 2007, 2010, and supports Windows 7 (32-bit/64-bit), Vista (32-bit/64-bit ), 2003, XP, 2000, NT4 (SP6).

Outlook PST repair is a powerful third party tool used to repair damaged and corrupt Outlook data. With high end scanning mechanism of PST repair tool you can easily scan Outlook 2007, 2010 or any version PST files. In few easy steps it recovers lost or deleted PST items by fixing outlook error message 0x800ccc78.

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