Re: Sudden failure of MikTeX console: no Qt platform plugin

In article <veififU1v0taL1@usenet.in-ulm.de>, spamless@gmx.de says...

 
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 ...

I have been able to temporary repair the system by manually deleting C:
\Users\eb\AppData\Local\MiKTeX and re-installing MikTeX from setup-5.3.1
+b8f430f-x64 (April 2023 according to file date). This old MikTeX works,
but an update then causes the same problem.

"miktex packages update-package-database" results in error messages that
the files MikTeX230100-fmt.dll, MikTeX231000-expat.dll and MikTeX230100-
curl.dll are not found. Effective file search confirms that these files
are not anywhere in the MikTeX-tree.