Microsoft Outlook 0x800CCC05 Error Fix

RECOMMENDED: Click here to fix Windows errors and optimize system performance

Outlook 0x800CCCC05 Not connected to the server An error has usually occurred when using Outlook Express. This error is not more complicated, but this error makes the Outlook account inaccessible. In this state, the user cannot access his e-mails and cannot send e-mails from his Outlook account. Most often outlook express 0x800CCC05 Not associated with server error messages due to authenticated problems.

0x800CCC05 Outlook Error

Corrupted Outlook PST files are the main cause of the Microsoft Outlook 0x800CCC05 error not connected to the server. To recover these files, you must first repair damaged and inaccessible Outlook data.

How to repair Outlook 0x800CCC05 Not connected to a server error:

Disable the firewall and add the name of the incoming and outgoing server again.


Another common reason is that the Windows firewall does not allow Outlook to access the Internet. So you should disable the firewall. This method exposes Outlook to network attacks. But to avoid this reason, you should try it.

  1. Close Outlook and go to the “Control Panel”, where you click on the “Network and Internet” option.
  2. On the next screen, click Network and Share Center.
  3. Then look for “Windows Firewall” in the lower left corner and click on it. On the next page, click on the “Enable or disable Windows firewall” link.
  4. In the last interface, you can disable the Windows firewall. Disabling the Windows firewall
  5. You can restart Outlook and add the names of incoming and outgoing servers in the Outlook account settings.

April 2021 Update:

We now recommend using this tool for your error. Additionally, this tool fixes common computer errors, protects you against file loss, malware, hardware failures and optimizes your PC for maximum performance. You can fix your PC problems quickly and prevent others from happening with this software:

  • Step 1 : Download PC Repair & Optimizer Tool (Windows 10, 8, 7, XP, Vista – Microsoft Gold Certified).
  • Step 2 : Click “Start Scan” to find Windows registry issues that could be causing PC problems.
  • Step 3 : Click “Repair All” to fix all issues.


After performing the above steps, you should check whether the problem is solved or not. If the error persists, you must immediately activate the firewall to protect Outlook from virus or spyware attacks.

Start Outlook in safe mode

Start Outlook in safe mode

Assuming that all the above methods can correct this error, there is a good chance that one of the existing add-ins is the criminal. Therefore, you should ask for this reason.

Close Outlook and go to the Start menu. In the search box, type Outlook.exe /safe and press Enter, which starts Outlook in safe mode. Start Outlook in safe mode
Then go to File > Options > Add-Ins > Go.
In the next dialog box, delete one add-in after another and restart Outlook normally to check if the add-in is involved. Delete Outlook add-ins

Disabling scanning programs


These programs such as antivirus (Norton and Mcafee) and firewall offer a high level of security to protect our computer and other elements against virus/malware attacks. In most cases, antivirus programs make it more difficult to send and receive emails in MS Outlook (because Norton found it more annoying for Outlook 2010).

Define the level of protection of the firewall settings as a support, taking into account the specified factor (so that the firewall can allow these files to access the Internet).

Effective way to fix all kinds of digital errors in Outlook (including 0x800ccc0f): In the paragraph above, it is clear that in the worst case of corruption, there is no solution that can help you overcome the 0x800ccc0f error in Outlook. But, a highly recommended and reliable solution can help you recover infected data from Outlook 0x800ccc0f after repair.

RECOMMENDED: Click here to troubleshoot Windows errors and optimize system performance