Problem with xelatex since last update

With the last update (packages updated on 3/16/2021) I have a problem 
with xelatex, while pdflatex or lualatex both work fine.

..\AppData\Local\MiKTeX\2.9\miktex\log\initexmf.log shows:

2021-03-17 18:46:46,891+0100 FATAL xelatex.core - Die 
Speicher-Dump-Datei konnte nicht gefunden werden.
2021-03-17 18:46:46,891+0100 FATAL xelatex.core - Data: 
fileName="xelatex.fmt"
2021-03-17 18:46:46,891+0100 FATAL xelatex.core - Source: 
Libraries\MiKTeX\TeXAndFriends\texmfapp.cpp:717
2021-03-17 18:46:46,891+0100 FATAL xelatex - Die Speicher-Dump-Datei 
konnte nicht gefunden werden.
2021-03-17 18:46:46,891+0100 FATAL xelatex - Info: fileName="xelatex.fmt"
2021-03-17 18:46:46,891+0100 FATAL xelatex - Source: 
Libraries\MiKTeX\TeXAndFriends\texmfapp.cpp
2021-03-17 18:46:46,891+0100 FATAL xelatex - Line: 717
2021-03-17 18:46:46,893+0100 INFO  xelatex - this process (1888) 
finishes with exit code 1


I tried to build the format xelatex via the console app. The result was

Das MiKTeX-Konfigurationswerkzeug ist aus irgend einem Grund 
gescheitert. Die Ausgabe wurde in eine Datei gespeichert.

fileName="E:\TeX\MiKTeX29\miktex/bin/x64\initexmf.exe", exitCode="1", 
savedOutput="%localappdata%\MiKTeX\2.9\miktex\log\initexmf_2021-03-17-190910.out"

There was the information:
Sorry, but "MiKTeX Configuration Utility" did not succeed.

The log file hopefully contains the information to get MiKTeX going again:

   %localappdata%\MiKTeX\2.9\miktex\log\initexmf.log


There was the information:

2021-03-17 19:09:04,146+0100 INFO  initexmf - this is MiKTeX 
Configuration Utility 4.3 (MiKTeX 21.3)
2021-03-17 19:09:04,146+0100 INFO  initexmf - this process (12000) 
started by 'miktex-console' with command line: initexmf --dump=xelatex
2021-03-17 19:09:04,146+0100 INFO  initexmf - Operating on the private 
(per-user) MiKTeX setup
2021-03-17 19:09:04,153+0100 INFO  initexmf - running: 
miktex-makefmt.exe --engine=xetex --dest-name=xelatex --no-dump 
xelatex.ini --miktex-disable-maintenance --miktex-disable-diagnose
2021-03-17 19:09:04,205+0100 INFO  initexmf.core - start process: 
miktex-makefmt.exe --engine=xetex --dest-name=xelatex --no-dump 
xelatex.ini --miktex-disable-maintenance --miktex-disable-diagnose
2021-03-17 19:09:10,124+0100 ERROR initexmf - sub-process error output 
has been saved to 
'%localappdata%\MiKTeX\2.9\miktex\log\miktex-makefmt_2021-03-17-190910.out'
2021-03-17 19:09:10,124+0100 FATAL initexmf - The executed process did 
not succeed.
2021-03-17 19:09:10,124+0100 FATAL initexmf - Info: 
fileName="E:\TeX\MiKTeX29\miktex\bin\x64\miktex-makefmt.exe", exitCode="1"
2021-03-17 19:09:10,124+0100 FATAL initexmf - Source:
2021-03-17 19:09:10,124+0100 FATAL initexmf - Line: 0
2021-03-17 19:09:10,125+0100 INFO  initexmf - this process (12000) 
finishes with exit code 1


Is there a problem with the latest update or is it my fault?

Thanks in advance
Ralf


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