A Rollup Update has been released for Outlook 2013. This is a non-security update which contains 4 documented improvements and fixes.
- The custom forms with Visual Basic Script (VBScript) doesn’t run in shared calendars in Outlook.
- When you send an email from a shared mailbox, the email appears in wrong Sent Items folder in some scenarios.
- Outlook crashes on startup and opens in safe mode when your preferred language list is set to a language that doesn’t have a Local ID Values (LCID). For example, your preferred language is set to Javanese or Malagasy.
- You see that authentication prompts appear behind the active Outlook window and cannot be accessed.
View: Download information for KB4018303
Note: This update can be installed via Microsoft Update or the Update Now button when you are using Office 365 and updates Outlook to version 15.0.5023.1000.