Outlook: Error “An OLE registration error occurred. The program is not correctly installed…”

You may get an error when you try to write an email in Microsoft Outlook:

Microsoft Word is set to be your e-mail editor. However, Word is unavailable, not installed, or is not the same version as Outlook. The Outlook e-mail editor will be used instead. An OLE registration error occurred. The program is not correctly installed. Run setup again for the program.

I personally received this error message when selecting the “Send/Receive” button.

To try to fix this problem, perform the following steps.

1. Close Outlook.
2. Select the “Start” button, then type “cmd“.
3. Right-click “Command Prompt”, then choose “Run as Administrator“.
4. In the command prompt type the following, then press “Enter“:
   regsvr32 ole32.dll
   In some cases, you may need to type:
   regsvr32 %windir%\system32\ole32.dll

You should get a response that says the registration succeeded. Select “OK” and try Outlook again.

If the error message still appears, try the following:

Note: You may lose some data or settings.

1. Close Outlook.
2. Navigate to “C:\Users\USERNAME\AppData\Local\Microsoft\Outlook“
3. Delete and clear all files located in the “Outlook” folder so that it is empty.
4. Open Outlook, and it should re-create and update its data source and function correctly.

Thanks to Somajde for this fix.