Error Message: Either there is no default mail client or the current mail client cannot fulfill the messaging request. Please run Microsoft Outlook and set it as the default mail client.

To resolve this issue, you must first remove the corrupted Outlook registry key: To do this open your registry editor.

On the Windows taskbar, click Start > Run. Type regedit and Press Enter.

 Go to the following registry key: HKEY_LOCAL_MACHINESOFTWAREClientsMail

 In the right pane, right-click the following registry value:

1. PreFirstRun
2. Click Delete.
3. Click Yes to confirm the deletion.

Go to the following registry key: HKEY_LOCAL_MACHINESoftwareClientsMail

In the left pane, right-click the following subkey:

1. Microsoft Outlook
2. Click Delete.
3. Click Yes to confirm the deletion.

Exit Registry Editor.

Restart your computer.