  We present an analysis of the XMM-Newton observations of the symbiotic
recurrent nova T CrB, obtained during its active phase that started in 2015.
The XMM-Newton spectra of T CrB have two prominent components: a soft one (0.2
- 0.6 keV), well represented by black-body emission, and a heavily absorbed
hard component (2 - 10 keV), well matched by optically-thin plasma emission
with high temperature (kT ~ 8 keV). The XMM-Newton observations reveal
evolution of the X-ray emission from T CrB in its active phase. Namely, the
soft component in its spectrum is decreasing with time while the opposite is
true for the hard component. Comparison with data obtained in the quiescent
phase shows that the soft component is typical only for the active phase, while
the hard component is present in both phases but it is considerably stronger in
the quiescent phase. Presence of stochastic variability (flickering) on
time-scales of minutes and hours is confirmed both in X-rays and UV (UVM2
filter of the XMM-Newton optical monitor). On the other hand, periodic
variability of 6000-6500 s is found for the first time in the soft X-ray
emission (0.2 - 0.6 keV) from T CrB. We associate this periodic variability
with the rotational period of the white dwarf in this symbiotic binary.
