Repair 0x800CCC90 Error
Error 0x800CCC90 – What is it?
Error 0x800CCC90 is a typical Outlook error. This error indicates that Outlook has failed to connect to the mail server that handles and manages the incoming and outgoing emails. The error message is displayed in the following format:
“There was a problem logging onto your mail server. Your User Name was rejected.”
This error limits your ability to send and receive emails on Outlook. If you largely communicate at the workplace using your Outlook account, this error may slow down your work productivity and performance dramatically. Therefore it is advisable to fix it immediately.
The error 0x800CCC90 is triggered several reasons including but not limited to:
- Authentication issues
- Failure of POP 3 Server
- PST File Corruption
- Registry issues- Invalid Entries
- Viral infection
Further Information and Manual Repair
To resolve error 0x800CCC90, try the methods given below:
Method 1 – Adjust the Authentication Settings
To resolve the error 0x800CCC90, adjust the authentication settings. Here’s what you need to do:
- First, go to the ‘Tools’ tab and select the ‘Accounts’ option.
- Once you select the account option, an internet accounts box will appear on the computer screen.
- Simply double click on the account property box after that go to the server tab and click on it.
- Check the box that says ‘My Server Requires Authentication’.
- Click on apply to accept changes tab to save changes and close the window.
- To activate changes made, restart Outlook and then try sending emails again.
Method 2 – Download a PST Repair Tool
If the error is triggered by PST file corruption, then the best way to resolve it is to download the PST repair tool. Download the PST repair tool from a trusted website. Run it on your system to fix PST file issues and resolve error 0x800CCC90.
Method 3 – Scan for Viruses
Another way to resolve this error is to scan for viruses. Viruses usually enter computer systems through phishing emails or while downloading attachments.
You may not know this but viruses may be affecting your PC. Due to viruses, errors like error 0x800CCC90 can also be triggered. Therefore install an antivirus to scan and remove errors on your PC.
Method 4 – Clean the Registry and Remove Invalid Entries
Due to poor PC maintenance, misconfigured and invalid registry entries may be stored in the registry. Such entries may lead to Outlook errors too. Thus to resolve you must clean the registry and remove these entries right away. Download a registry cleaner to fix the error.
Whether the error is triggered by viral infection or registry issues, it is recommended you download only Restoro. This is the one-stop solution to resolve all PC related errors. This software is deployed with 6 scanners including a registry cleaner, an antivirus, and a system optimizer.
It is user-friendly and has simple navigation. It is compatible with all Windows versions. In just a few clicks this software resolves practically all types of PC-related errors including error 0x800CCC90.
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