Tekla supports Microsoft Windows 7 and Microsoft Windows Server 2008/2008 R2 until January 2020

Microsoft has announced that their support for Windows 7 and Windows Server 2008/2008 R2 is ending January 14, 2020. Because of this, we will not continue supporting these operating systems beyond this date either.
For more information, see:
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Windows Server 2008 and 2008 R2: Prepare for Windows Server 2008 end of support
We recommend that all users on Windows 7 or Windows Server 2008 (including R2) upgrade their computers to a newer Windows operating system by January of 2020.
We do not guarantee that any Tekla products will work correctly on Windows 7 or Windows Server 2008 (including R2) after 14th of January 2020, nor that Tekla service teams will have the tools for solving Windows 7 or Windows Server 2008 related problems.
Supported operating systems
Tekla Structures
You can find the supported operating systems for all currently supported versions of Tekla Structures here.
Tekla Structural Designer
You can find the supported operating systems for all currently supported versions of Tekla Structural Designer here.
Tekla Tedds
You can find the supported operating systems for all currently supported versions of Tekla Tedds here.