This could be as simple as incorrect handling of the long file path which has a space in it. Try navigating to the folder C:\Users\Maurizio\AppData\Local\MiKTeX 2.9\miktex/bin/x64 using a command prompt and then type Regsvr32.exe MiKTeX209-core.dll
-----Original Message----- From: Mau V via MiKTeX-Users [mailto:miktex-users@lists.sourceforge.net] Sent: 21 November 2017 09:32 To: miktex-users@lists.sourceforge.net Cc: Mau V <mvs1...@yahoo.it> Subject: [MiKTeX] Failed install Thanks for all suggestions but I still cannot install MikTeX2.9 for a single user (myself, Maurizio) with no admin privileges under Win10. I had MikTeX installed (under admin) working perfectly but now, for reasons beyond my control, I need to have a clean MikTeX install as a single user (no admin privileges). Thus I had MikTeX unistalled and I am now trying to install again only for me (under my user name). At the end I get: Registering root directories... Operating on the private (per-user) MiKTeX setup configuring fontconfig\config\fonts.conf registering C:\Users\Maurizio\AppData\Local\MiKTeX 2.9\miktex/bin/x64\MiKTeX209-core.dll Sorry, but "MiKTeX Package Manager" did not succeed. The log file hopefully contains the information to get MiKTeX going again: C:/Users/Maurizio/AppData/Local/MiKTeX/2.9/miktex/log/mpmcli.log You may want to visit the MiKTeX project page, if you need help. Error: The executed process did not succeed. And mpmcli.log contains: 2017-11-20 16:18:05,112+0100 INFO mpmcli - starting: mpmcli 2.9.6405 (MiKTeX 2.9.6500 64-bit) 2017-11-20 16:18:05,112+0100 INFO mpmcli - Operating on the private (per-user) MiKTeX setup 2017-11-20 16:18:05,112+0100 INFO mpmcli - configuring fontconfig\config\fonts.conf 2017-11-20 16:18:05,143+0100 INFO mpmcli - registering C:\Users\Maurizio\AppData\Local\MiKTeX 2.9\miktex/bin/x64\MiKTeX209-core.dll 2017-11-20 16:18:05,143+0100 FATAL mpmcli - COM registration/unregistration did not succeed. 2017-11-20 16:18:05,159+0100 FATAL mpmcli - Info: path="C:\Users\Maurizio\AppData\Local\MiKTeX 2.9\miktex/bin/x64\MiKTeX209-core.dll", hr="Accesso negato. " 2017-11-20 16:18:05,159+0100 FATAL mpmcli - Source: Libraries\MiKTeX\PackageManager\PackageInstaller.cpp 2017-11-20 16:18:05,159+0100 FATAL mpmcli - Line: 1505 Any help appreciated.... ThanksMaurizio ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Q: How can I leave the mailing list? A: See http://docs.miktex.org/faq/support.html#leavingml ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Q: How can I leave the mailing list? A: See http://docs.miktex.org/faq/support.html#leavingml