Troubleshooting cdo windows errors: A Step-by-Step Guide

Common cdo windows errors include the following:
* Unable to get CDO registry key * Server not found – where the server name is invalid * Could not open the registry key – where the registry key is missing or corrupt * Could not open the registry key. It might have been moved or deleted. * The CDO registry key not found – where the registry key cannot be found

• The cdo windows error may often appear after installing certain apps or updates.
• To fix this error, you need to fix Windows registry or reinstall third-party apps.

Uninstall and reinstall the .net framework

1. Open Control Panel.
2. Click Programs and Features.
   
3. Select the Microsoft .NET Framework 4.7.2, right-click on it, and select Uninstall.
4. Reboot the computer.
5. Open the “Settings” app and go to “Update & Security”.
6. Click on “Check for updates”.

Disable the Windows Defender Firewall

1. Press Windows key + S, type firewall in the search box, and click on the relevant search result.
2. Now, select Turn Windows Defender Firewall on or off.
3. Now, disable Windows Defender Firewall.
4. Start the Command prompt as administrator.
   
5. In the Command prompt window, enter the following command and press Enter: netsh advfirewall set allprofiles state off

How do I disable Windows Defender Firewall?

1. Open Control Panel and go to Windows Security
2. Go to Windows Defender Firewall
   
3. Select Turn Windows Defender Firewall on or off
4. Tick the box Turn on Windows Defender Firewall

Reinstall the .NET Framework

1. Open Control Panel.
2. Select Programs and Features.
   
3. Click Microsoft .NET Framework 4.5.2 and then click Change.
4. Uncheck the checkbox for Repair and Remove.
5. Click Next and then Finish.
6. Run the Windows update.

Run the Windows update troubleshooter

1. Right-click on the Start button and select Troubleshoot from the menu.
2. Select Windows Update from the list and click on the Run the troubleshooter button.