У вашего броузера проблема в совместимости с HTML5
If you are unable to Open OST file or Outlook 2010 Cannot access .ost file cause of file corruption then don't worry. Here you will see the solution to access Emails from ost file weather it is corrupt or not, without installation of Microsoft Outlook Email Client. You will learn to Open Email from a damaged OST file too. You will be able to open email from any Outlook 2010 / 2013 / 2016.
http://goo.gl/Hls32F
Know the reason and the resolution to Error OST File Cannot be Accessed.
The solution belongs to some similar Errors like:
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