[Qgis-user] Error loading QGIS Question

[Saber Razmjooei]

Hi Louis,

This is likely caused by a Windows update. Ask your IT and see if they have
pushed a new Windows update to your system. And you are right, it is
Windows defender blocking some of those DLL. Check the report from your
virus scanner software and see what files have been flagged. If they are
from QGIS installation directory, you can whitelist them and then try again
and see if the application runs.

Kind regards
Saber

On Thu, 18 Dec 2025 at 15:04, Louis Creamore via QGIS-User <
qgis-user at lists.osgeo.org> wrote:

> To whom it may concern,
>
> I have recently successfully been using QGIS 3.40.13 with no issues.
> However, as of today whenever I go to launch I receive these error messages:
>
>
> I am not sure why this may being caused and I have tried various work
> arounds including, resetting my profile, uninstalling and reinstalling the
> same version of QGIS, uninstalling and reinstalling QGIS version 3.44 and
> also installing and uninstalling via the OSGeo4W installer all of which
> have not fixed the issue.
>
> I am led to believe that the issue may be due to the application having
> been blocked by windows smart app control. I am reticent to turn this off
> unless it is a last resort especially as the same version of QGIS (3.40.13)
> was working correctly over the previous days. I am not sure what could've
> changed. Any advice on how to proceed would be kindly appreciated.
>
> Best wishes,
>
> Louis
>
>    -
>
>
>
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-- 

Saber Razmjooei

Co-Founder

lutraconsulting.co.uk

 [image: https://www.linkedin.com/in/saber-razmjooei/]
<https://www.linkedin.com/in/saber-razmjooei/>
<https://www.youtube.com/@LutraConsulting>
<https://github.com/lutraconsulting>

<https://www.lutraconsulting.co.uk/>
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