I have just tried out the latest gimp_gmic_qt 3.2.3 / Gimp 2.10.34 in Windows 10 and all is working.
My guess is you are trying to run the gmic executable directly and get error messages like this.
Gimp plugins are run from the Gimp menu structure. Find gmic bottom of the Filters menu.
30 second example: https://i.imgur.com/HHdWYxm.mp4
If you want it, there is a standalone gmic that is independent of Gimp, just get the GUI version from http://www.gmic.eu
Edit: Otherwise give details - Version of Gimp and where you got it ? Version of the gimp_gmic_qt plugin ? Sometimes a screenshot of the installation helps.
Quote:...When reinstalling, I sometimes got error messages (4 or 5) concerning "missing or not found" dlls even though they are displayed in the installation details (in the plug-ins).
My guess is you are trying to run the gmic executable directly and get error messages like this.
Gimp plugins are run from the Gimp menu structure. Find gmic bottom of the Filters menu.
30 second example: https://i.imgur.com/HHdWYxm.mp4
If you want it, there is a standalone gmic that is independent of Gimp, just get the GUI version from http://www.gmic.eu
Edit: Otherwise give details - Version of Gimp and where you got it ? Version of the gimp_gmic_qt plugin ? Sometimes a screenshot of the installation helps.