Comment 11 for bug 1710041

I just also had the same problem.
The previous version 0.48.4-1 uninstaller left over these files:

C:\Program Files\Inkscape\bzip2.dll
C:\Program Files\Inkscape\freetype6.dll
C:\Program Files\Inkscape\iconv.dll
C:\Program Files\Inkscape\intl.dll
C:\Program Files\Inkscape\libgthread-2.0-0.dll
C:\Program Files\Inkscape\libjpeg-7.dll
C:\Program Files\Inkscape\liblcms-1.dll
C:\Program Files\Inkscape\libMagick++-3.dll
C:\Program Files\Inkscape\libMagickCore-3.dll
C:\Program Files\Inkscape\libMagickWand-3.dll
C:\Program Files\Inkscape\libopenjpeg-2.dll
C:\Program Files\Inkscape\libpng12-0.dll
C:\Program Files\Inkscape\libpng14-14.dll
C:\Program Files\Inkscape\libpoppler-5.dll
C:\Program Files\Inkscape\libpoppler-glib-4.dll
C:\Program Files\Inkscape\libtiff-3.dll
C:\Program Files\Inkscape\libwpd-0.9.dll
C:\Program Files\Inkscape\libwpd-stream-0.9.dll
C:\Program Files\Inkscape\libwpg-0.2.dll
C:\Program Files\Inkscape\libxml2.dll
C:\Program Files\Inkscape\libxslt.dll
C:\Program Files\Inkscape\mingwm10.dll
C:\Program Files\Inkscape\pthreadGC2.dll

C:\Program Files\Inkscape\lib\gtk-2.0
C:\Program Files\Inkscape\lib\gtk-2.0\2.10.0
C:\Program Files\Inkscape\lib\gtk-2.0\2.10.0\engines

I had to manually delete them to make Inkscape 0.92.2 run properly.