If ProFile generates the error External exception E0434352 when attempting an Auto-fill my Return for a T1 return, try changing the default web browser to Internet Explorer.
Change the default web browser
- Exit ProFile and open the Windows Control Panel.
- In the top-right corner, enter the search term default programs.
- Select the Default Programs option from the search results.
- Select the Set your default programs option.
- Select Internet Explorer.
- Select Set this program as default.
- Select OK.
The error should no longer occur.