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From: Holger Schieferdecker <spamless@gmx.de>
Newsgroups: comp.text.tex
Subject: Re: Sudden failure of MikTeX console: no Qt platform plugin
Date: Mon, 14 Oct 2024 09:00:36 +0200
Organization: [ posted via ] IN-Ulm
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Am 12.10.2024 um 15:42 schrieb Dr Engelbert Buxbaum:
> Hi,
> 
> When I tried to do an update, I could no longer start the console
> because of a missing Qt platform plugin. I tried to uninstall MikTeX and
> then re-install it, but the uninstall also requires the plugin.

Quite a while ago I had an issue at least sounding similar. I don't 
remember the details, but I think I was able to fix it on the command 
line. Then there are two commands:

miktex packages update-package-database

miktex packages update

Afterwards you can refresh the filename database:

miktex fndb refresh

The above commands are meant for a user installation of MiKTeX. If you 
have a system wide installation you should use

miktex --admin ...

Remark: older releases of MiKTeX don't know the command 'miktex'. There 
was something similar called 'mpm', but I don't know the detailed commands.

Holger