[Qgis-user] again QGIS won't open

[Andreas Neumann]

 Hi Steven,

Maybe your action around "Then I had to modify several  Python scripts to
suit QT6.)" messed up the QGIS start script. It could be ...

You should not have to modify the Python scripts manually for running the
Qt6 version, but there is a separate startup script for QGIS-Qt6.

Another potential cause might be "Antivirus" software. We have seen it in
the past several times that Antivirus software messed around with QGIS for
no good reason.

Andreas

On Mon, 8 Sept 2025 at 00:01, Stephen Sacks via QGIS-User <
qgis-user at lists.osgeo.org> wrote:

> Andrea -
>    Here's what I did:
> 1.   Windows key + R   gets me to a Run window and then CMD gets me to a
> command prompt.
>   2.  chdir c:\osgeo4w  gets me to the OSGeo4W folder.
>   3.  Separately, I tried each of the following four commands:
>        c.  qgis
>        b.  qgis --profile my-new-profile
>        c.  qgis-ltr --profile my-new-profile
>        d.  qgis --noplugins
>
> In each case the response is:  'qgis'  is not recognized as an internal
> or external command, operable program or batch file.
>
> I  found  qgis-ltr-bin.exe   in   C:\QGIS 3.34.14   and double-clicked
> on it:  nothing happened..
> I  found  qgis-bin.exe   in   C:\OSGeo4W\bin   and double-clicked on
> it:  nothing happened..
>
> Shall I re-install QGIS 3.40 ?  The only QGIS that appears in Windows
> "Settings Installed apps" is QGIS 3.34.  I was running QGIS 3.40  a few
> days ago but it now seems to have evaporated.  (I watched for about 15
> minutes while hundreds of MB downloaded.  Then I had to modify several
> Python scripts to suit QT6.)
> I would welcome any advice .
>    Steve
> ----------------------------------
>
> H Stephen,
> are you still running QGIS, as advertised, from the OSGeo4W Shell using
> the "qgis-ltr --profile my-new-profile" command?
>
> Doesn't running "qgis-ltr --profile my-new-profile2" work?
>
> If it works, then the issue may be related to some plugin or Python
> script that you installed in your QGIS user profiles.
>
> Regards.
>
> Andrea
> ----------------------------------------
> On 9/7/2025 3:00 PM, qgis-user-request at lists.osgeo.org wrote:
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> >     1. again QGIS won't open (Stephen Sacks)
> >     2. Re: again QGIS won't open (Andrea Giudiceandrea)
> >     3. Request for quotation to fix SpatiaLite database
> >        visualization in QGIS 4 Browser Panel (Tot? Fiandaca)
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-- 

--
Andreas Neumann
QGIS.ORG board member (treasurer)
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