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I have recently made an update of MiKTeX on Windows 10. Now if I try to open a tex file I receive messages of system error complaining that certain files are missing, and suggesting me to try reinstalling the application. The missing files are:

MiKTeX210300-hunspell.ddl

MiKTeX210300-log4cxx.ddl

MiKTeX210300-lua53.ddl

MiKTeX210300-poppler-Qt.ddl

I have checked that in my MiKTeX directory (...\AppData\Local\Programs\MiKTeX\miktex\bin\x64) are actually present the files MiKTeX221200-hunspell.ddl, MiKTeX221200-log4cxx.ddl, MiKTeX221200-lua53.ddl and MiKTeX221200-poppler-Qt.ddl, which I guess are more recent versions of the files than the required ones.

On the other hand, if I try to access miktex-console.exe in order to uninstall the application, I get the same type of system error messages, complaining this time that the missing files are

MiKTeX221200-ui-Qt.ddl

MiKTeX221200-setup.ddl

MiKTeX221200-loc.ddl

MiKTeX221200-packagemanager.ddl

And I have checked that in my directory there are the files MiKTeX210300-ui-Qt.ddl, MiKTeX210300-setup.ddl, MiKTeX210300-loc.ddl and MiKTeX210300-packagemanager.ddl, so in this case presumably older versions of the files than the required ones!

What should I do now? Does it make sense to try reinstalling MiKTeX, if I am unable to uninstall before the older version which does not work any more?

Massimo
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    well this looks all rather outdated. In my miktex all dll have the number 230100. Check if there are updates in admin and user mode of the console. – Ulrike Fischer Apr 10 '23 at 19:55
  • I agree with you. I have recently installed MiKTeX on another computer, and the number of the dll files is 230100 as well. However, on the computer where I have the problem, I cannot run the miktex console in either admin or user mode, apparently just because the needed dll files are missing. – Massimo Apr 10 '23 at 20:32
  • Use the Microsoft way of removing programs (apps as they call it nowadays) to remove your MikTeX installation. Download the latest MikTeX basic installation program and after rebooting your computer perform a fresh installation. There is a major upgrade in MikTeX between these two versions, that can not be solved using the upgrade function. – alchemist Apr 10 '23 at 20:44
  • I have tried to remove MiKTeX using the App tool in the Windows Settings, but I receive the same system error messages about missing dll files, as when I try to run the miktex console. If instead I select MiKTeX in the Windows Control Panel and then click on 'Uninstall', then nothing happens. Is there another way to remove a program? – Massimo Apr 10 '23 at 21:09
  • There is ... Open Explorer Delete the MikTex Folder in where ever you installed it (Usually Program Files). Go to the AppData folder and delete the MikTeX folder in <username>\Local\MikTeX. If you feel confident, open the Registry and delete all keys containing the word MikTeX. That removes almost all keys related to MikTeX. Then reinstall a fresh download from the MikTeX repository, immediately do an update to obtain the most recent version. Install all other packages after that. – alchemist Apr 11 '23 at 02:03
  • Thank you alchemist, I followed your hints and the problem seems to be solved. – Massimo Apr 12 '23 at 17:33

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