[QGIS-Developer] QGIS Portable installation for Windows

Idan Miara idan at miara.com
Mon Aug 20 09:54:52 PDT 2018

Hi, Jürgen and Alex!

Thanks for your help!

Running qgis.bat by itself doesn't help, I needed to run "qgis.bat
--postinstall" like etc/postinstall/qgis.bat does as you pointed out, it
updates the env file (and doesn't run QGIS), then indeed qgis exe can run.

Is there any compilation that takes place during are installation process?
(python modules?) or it just extracts and runs etc\postinstall\*.bat and
than renames them to etc\postinstall\*.bat.done ?
Meaning, the installation folder on would be the same on different machines
(apart from the env files)?
Are there any CPU specific optimizations taking care during the

Best Regards,

On 20 August 2018 at 19:11, Jürgen E. Fischer <jef at norbit.de> wrote:

> Hi Idan,
> On Mon, 20. Aug 2018 at 18:44:45 +0300, Idan Miara wrote:
> > Is there a way to make a portable version of QGIS3 ? i.e. unzip and run?
> > or for instance to install it on a network drive so other users on the
> > network could use it without installing?
> Given that the microsoft runtimes are already installed, that should work.
> But you'll need to start the qgis batch file at least once (like
> etc/postinstall/qgis.bat does).   That will run the qgis-bin*.exe and
> update
> the qgis-bin*.env file next to it to the new path.
> After that you can also run the qgis-bin*.exe (eg. by pinning a running
> QGIS to
> the taskbar).  Multiple clients will have to access QGIS with the same path
> (unc path or the same mapped drive).
> Jürgen
> --
> Jürgen E. Fischer           norBIT GmbH             Tel. +49-4931-918175-31
> Dipl.-Inf. (FH)             Rheinstraße 13          Fax. +49-4931-918175-50
> Software Engineer           D-26506 Norden
> http://www.norbit.de
> QGIS release manager (PSC)  Germany                    IRC: jef on FreeNode
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