Unexpected Outlook errors can turn into a nightmare for any user. This is because, at first look, cryptic error codes can be very difficult to comprehend.
And how can you expect one to solve an error that one can’t even understand? The outlook is often plagued by such complex issues that end up putting a halt to our daily activities.
Thus, like its users, we should be aware of sudden errors that can crop up any day so that they can be resolved at the earliest.
1. Check for connectivity issues
The first step should be to check is your machine’s connection with the Exchange server. For this check both the Internet connection as well as the access gateway connection to the Exchange server. Make sure the configuration and settings are correct and that everything is in place.
2. Disable anti-virus and Windows firewall
In addition to Windows Firewall, your anti-virus program might also hamper the smooth working of incoming and outgoing emails. Thus, to check if this is the issue, disable your anti-virus. Also, disable the Windows Firewall as follows:
Updated on September 27, 2018
Unexpected Outlook errors can turn into a nightmare for any user. This is because, at first look, cryptic error codes can be very difficult to comprehend. And how can you expect one to solve an error that one can’t even understand? The outlook is often plagued by such complex issues that end up putting a halt to our daily activities. Thus, like its users, we should be aware of sudden errors that can crop up any day so that they can be resolved at the earliest.
This article highlights one such error that can prove to be quite puzzling. It has the error code ‘0x800ccc0f’ associated with it and herein we’re providing all information there is to know about it.
An introduction to error 0x800ccc0f
While using Outlook, if the SMTP-based email send/receive operation fails, users might see the following message:
"Sending / Receiving reported error (0x800CCC0F): The connection to the server was interrupted"
This error can arise without warning or any prior symptoms and hence can be very startling. To resolve it, you need to find the exact cause behind it and eliminate it completely.
Common reasons behind error 0x800ccc0f include:
Slow Internet connection or connectivity issues with the Exchange server
Firewall blocking MS Outlook outgoing and incoming messages
Incorrect Outlook profile settings or corrupted Outlook profile
A technical issue with the server settings
OST file corruption
Depending upon what the exact trigger behind the error is, one of the following solutions is sure to fix this issue.
Common ways to fix outlook error 0x800ccc0f
Note: After applying each of these fixes, try sending/receiving emails to make sure if the error is resolved or not.
1. Check for connectivity issues
The first step should be to check is your machine’s connection with the Exchange server. For this check both the Internet connection as well as the access gateway connection to the Exchange server. Make sure the configuration and settings are correct and that everything is in place.
2. Disable anti-virus and Windows firewall
In addition to Windows Firewall, your anti-virus program might also hamper the smooth working of incoming and outgoing emails. Thus, to check if this is the issue, disable your anti-virus. Also, disable the Windows Firewall as follows:
Open Control Panel and go to Network Connections
Right click on the internet connection you’re using and select ‘Properties’ from the pop-up menu
Under the ‘Security’ tab, switch off the Firewall
To be sure that you’ve cleared all pathways for your incoming and outgoing emails, manually add the incoming POP server name and the outgoing SMTP server name to Outlook Email Accounts. For this:
Open Outlook and select Tools -> E-mail Accounts.
Select ‘View or change existing e-mail accounts’ and then click on Next.
The E-mail Accounts dialog box will open. Click on Add -> POP3 -> Next.
Type the correct information for your POP3 mail server, and then click Next -> Finish
Check and rectify Outlook account settings
If this doesn’t work, proceed to the next fix.
3. Check Outlook profile settings
Check your default Outlook profile’s settings. If they are incorrect, correct them. If you’re not sure about what is wrong, delete the current default profile and create a new one. Then set the newly created Outlook profile as the default profile.
4. Clear up suspicious emails from Outlook and Outlook Outbox
Sometimes, suspicious emails or emails with un-trusted attachments might be the real reason behind this error. If you think there are such emails within your Outlook inbox, delete them immediately. Also, if your Outlook outbox is overcrowded, clear it up (only the Outbox).
5. Verify your router’s MTU
The Maximum Transmission Unit (MTU) size of your router might also be creating this issue while sending/receiving particular mails. Check it and make changes to outgoing message sizes accordingly.
6. Start MS Outlook in Safe mode
Outlook Safe mode launches the application with basic settings, that is, no add-ins are loaded. If a faulty add-in is a culprit, this fix will help you point that out. To start Outlook in Safe mode:
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