At the same time Microsoft released the Windows 8.1 and Windows Server 2012 R2 bits to TechNet and MSDN subscribers, they also released the Release Notes for Windows 8.1 on a page on the Microsoft Download Center. On this page you can a document (*.docx format) with the critical issues, that have currently been identified, that might require avoidance or workaround to get Windows 8.1 installed and running.

Below is the list with the current important issues for Windows 8.1:

Internet Explorer 11

Three issues have been identified with Internet Explorer 11:

• Input Method Editor (IME) input does not accept non-Latin characters with Adobe Flash in Internet Explorer. Only Latin characters can be inserted with an IME. To avoid this, use Internet Explorer for desktop.
• If you visit a website that contains Adobe Flash Player-based content, no PlayTo endpoints are listed in the Devices charm. There is no workaround at this time.
• When you pause Adobe Flash Player-based content in Internet Explorer and switch to Internet Explorer for desktop, the content might not be visible when you return. To avoid this, do not pause content when switching to the desktop. If this has already occurred, try refreshing the web page.

Work Folders

The client and server must be running the same milestone release for Work Folders to function properly. For example, if the server is running this milestone release of Windows Server 2012 R2, the client must be running the same milestone release of Windows 8.1.