Jochem Kail jochem.kail at uni-due.de
Mon Feb 16 01:17:47 PST 2026
The workaround you suggested solved the problem! On my computer
msvcp140.dll was located in OSGeo4W\bin and I copied it to
OSGeo4W\apps\Qt5\bin.
Yes, you are right, msvcp140.dll is in bin\ not in apps\bin\. It was an
oversight.
As an alternative, Thomas Nogatz suggested the following, which also
worked: Start the OSGeo4W shell (type "OSGeo..." in Windows search). In
the shell, enter "designer and press enter.
Yes, executing the "designer" command in the OSGeo4W Shell will open the
Qt Designer, even if msvcp140.dll was not copied to apps\Qt5\bin.
Anyway, in such case the "QGIS custom widgets" will be missing in Qt
Designer.
In order for the "QGIS custom widgets" to be available in Qt Designer,
you need to start it through the short cut icon or executing the command
"qgis-designer" or "qgis-ltr-designer" (which correspond to executing
qgis-designer.bat or qgis-ltr-designer.bar) depending on you have
installed QGIS or QGIS LTR.
To do that, msvcp140.dll should be copied to apps\Qt5\bin, due to the
version of Microsoft Visual C++ Redistributable installed in your system.
I've reported the issue to the OSGeo4W tracking system at
https://trac.osgeo.org/osgeo4w/ticket/909
Regards.
Andrea
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