The filename is UpgradingvCenterServer7.0failsduringprecheckwith_Host(s)werefoundinthevCenterInventory,thatarepotentiallyproblematicforavCenterupgrade_(86447).pdf. And I've tried both 6.1.2 and 6.2.2 beta versions.
Sorry, I gave a different file in my reply. For the original screenshot, my file was DellPERCH730_H730P_H830_FD33xS_FD33xDMini_AdapterRAIDControllersfirmwareversion25.5.9.0001_DriverDetails_DellU.pdf. I then changed the filename to this DellPERCH730_H730P_H830_FD33xS_FD33xDMini_AdapterRAIDControllersfirmwareversion25.5.9.0001.pdf and the GUI picked it up fine. Thanks.
Even with that filename, I get the icon. See the attachment.
Does the problem happen in any folder? It seems that your file is on a network drive. Isn't it connected to the problem? Or do you have the problem even on local drive?
Do you see the icon correctly in Windows File Explorer in the same folder, where WinSCP fails to display it?