If you find that your calendar invitations and updates are sending in different languages (e.g. Chinese characters), please change the following setting to correct this bug:
- Click on Start and type Control Panel
- Open this result once it is found, and select Region
- Go to the Administrative tab and click the Change system locale... button
- Remove the checkmark against Beta: Use UTF-8 for worldwide language support
- Click OK to save the change and restart your machine as soon as possible