Win 10 & SU Pro 2015

[SketchUp3D_de]

SketchUp v2015 system requirements do cover Windows 7/8 & Mac OS v10.8/9/10.

Might be this one:

"File currently locked by another user" error in Windows Explorer

We have found a bug that has a workaround. The “file currently locked by another user” message seen when the preview pane in windows explorer is open and the file is opened by double clicking. Some people get a “read only” version when opening. To see the issue, you need to have the Preview pane open (which is turned off by default - which is a good thing - on Win 7, Win 8 and Win 10), Windows Explorer needs to be set to a thumbnail view, the model needs to have a thumbnail and the user needs t…

upgrading to the recent version 2018 supporting recent operating systems is always an option…