Dear All, Recently something went wrong with updating Miktex on my win 10 laptop. It has something to do with "unregistering" and MiKTeX209-core.dll. Below is the log file. Any help will be appreciated. Jerzy .... 2017-11-29 10:45:28,713+0100 INFO Update - starting: Update Wizard 2.9.6389 (MiKTeX 2.9.6500 64-bit) 2017-11-29 10:46:32,533+0100 INFO FileCopyPage - starting package maintenance... 2017-11-29 10:46:32,533+0100 INFO FileCopyPage - installation directory: "C:\Program Files\MiKTeX 2.9" 2017-11-29 10:46:32,533+0100 INFO FileCopyPage - package repository: ftp://ftp.tu-chemnitz.de/pub/tex/systems/win32/miktex/tm/packages/ 2017-11-29 10:46:32,543+0100 INFO FileCopyPage - visiting repository ftp://ftp.tu-chemnitz.de/pub/tex/systems/win32/miktex/tm/packages/... 2017-11-29 10:46:32,543+0100 INFO FileCopyPage - repository type: remote package repository 2017-11-29 10:46:32,543+0100 INFO FileCopyPage - loading lightweight database... 2017-11-29 10:46:32,543+0100 INFO FileCopyPage - downloading ftp://ftp.tu-chemnitz.de/pub/tex/systems/win32/miktex/tm/packages/miktex-zzdb1-2.9.tar.lzma... 2017-11-29 10:46:33,933+0100 INFO FileCopyPage - 172390 bytes, 121.29 KB/Sec 2017-11-29 10:46:34,083+0100 INFO FileCopyPage - lightweight database digest: d69b270c0181276390f594b151ceaeee 2017-11-29 10:46:34,083+0100 INFO FileCopyPage - going to download 1125783 bytes 2017-11-29 10:46:34,083+0100 INFO FileCopyPage - going to install 21 file(s) (1 package(s)) 2017-11-29 10:46:34,083+0100 INFO FileCopyPage - unregistering C:\Program Files\MiKTeX 2.9\miktex/bin/x64\MiKTeX209-core-PS.dll 2017-11-29 10:46:34,083+0100 INFO FileCopyPage - unregistering C:\Program Files\MiKTeX 2.9\miktex/bin/x64\MiKTeX209-core.dll 2017-11-29 10:46:34,093+0100 INFO FileCopyPage - 2017-11-29 10:46:34,093+0100 INFO FileCopyPage - Error: Windows API error 193.
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