4 Methods to Fix Outlook Error 0x800ccc90

Amy Dennis

Dec 25, 2024 • Filed to: Recover Emails • Proven solutions

The Outlook error 0x800ccc90 is one of the most common errors users experience when trying to receive or send emails using the Microsoft Outlook program. Since this is the case, this article has been provided for you, as a user experiencing the error, to be able to fix it without having to stress about calling an expert. Thus, you will be shown the possible reasons why you encounter this error and more importantly, practical ways you can fix the error.

What are the Probable Reasons for Outlook Error 0x800ccc90?

To find out why you are experiencing the Microsoft Outlook error 0x800ccc90, read the following:

1. If the port number you have used for your Outgoing Server is changed to an incorrect one, you may experience the error 0x800ccc90. It is also possible that your port has been blocked by your Internet Service Provider (ISP).
2. A possible reason for this error is that you are using an incorrect username and password. If Outlook cannot match your username and password, you may experience this error.
3. If you have installed an external application such as an antivirus or firewall, your security detail is possibly blocking the smooth functioning of your email on Outlook.

How to Fix Outlook Error 0x800ccc90

You came here because you want to know how to fix the error 0x800ccc90 right? Well, let's get to it!

1. Create New Send/Receive Groups

You can make the process of sending and receiving emails easier by dividing your POP3 account into smaller groups and connecting separately with these groups. To do this, follow the steps below:

• Select "Send/Receive" and click "Send/Receive Groups" > "Define Send/Receive Groups"

• Select the "New" tab. Next, input a new name to the group under the box labeled "Send/Receive Group Name"

• Begin adding the accounts you want to add to this group you have created by ticking the checkbox "Include the selected account in this group"

• Tick the boxes beside "Receive Mail Items", as well as "Send Mail Items"

• Select the option "Download complete item including attachments". Next, choose "OK"

• Keep creating as many groups as you need. When you are done, select "Close"

• If you want to receive or send a mail with any of the groups you have created, go to "Tools" option, select the "Send/Receive" tab and choose the group by name

2. Changing the Server Port Numbers

You can also change the port numbers of your server by doing the following:

• Click on "File" and "Account Settings"

• Choose the "Email" account and click "Change"

• In the "Change" window click on "More settings"

• Click on "Advanced tab" and input "995" in the box beside "Incoming Server (POP3), all under the "Internet Email Settings" window

3. Using the Outlook Inbox Tool

Outlook has an Inbox Repair Tool that scans for errors in Outlook PST files and fixes them. To use this tool, follow these steps:

• Vacate Outlook and open the Inbox Repair Tool
• Input the path to find your PST file and its name in the toolbox or "Browse" for the file
• Click "Start" to begin scanning.

4. Try the Third-Party Outlook Repair Tool

The Inbox Repair Tool needs to be run several times to get all the errors in your Outlook. Moreover, there is no guarantee that all the errors will be eliminated. Why not save yourself the time and uncertainty by opting for an option that will guarantee you a complete repair of your Outlook once and for all? Stellar Outlook Repair can fix the errors within your Outlook PST file and ensure that you do not experience the error 0x800ccc90 anymore.

So, let's get fixing!

Step 1. Add Corrupt File

Click on "Find" or "Browse" to add the corrupt PST file for repair

Step 2. Repair File

Select the blue button labeled "Repair"; the tool will scan for errors and fix them

Step 3. Preview and Save File

Go through all the repaired files using the preview feature of Stellar Outlook Repair

All that is left to do after previewing is to save the files. Do this by choosing "Save Repaired File", an option beneath "Home"

The Bottom Line

You can now enjoy sending and receiving your emails: messages, journals, attachments, tasks, calendars, meeting schedules, lists, and many more. This has been made possible through this article and the solutions it brings, top of which is the use of Stellar Outlook Repair, a tool which you can trust even if all other options fail