It helped thanks.

On PC HDD I have a partition for the system. The system maintenance doesn't allow to diminish the partition under 180 G in spite of the fact, that the date amount is only 58 G. The fragmentation is...

I've after all found. It was WindowsUpdateDiagnostic.diagcab file (programe?).
Thanks

Thanks,
meanwhile I found in one of the questions concerning problems with 1607 link to a program checking up a computer with regard to the cumulative update 1607. This programe found some problem...

I tried two times to update, but without any success (many updates before passed without a problem). At the end PC reported that there is a problem and showed for a short time a blue window with the...