Re: Outlook 2013 restart when the user send email.

Hi Geir,

From the description "This PC had an trial Version of Office 2013 installed. The trial License expired." and "So she has two accounts defined in Outlook.", so I recommend you export the emails of the previous account to a PST file and remove the account from the Outlook client. After that, check if the issue still persists.

Thanks,
Aaron Yuan