It’s a frequently asked question. QGIS hasn’t been officially checked by Apple (notarised), so macOS puts up the error.
If you trust it, then you can add an exemption by right clicking (control-click) on the QGIS.app and select open. I think the readme comment relates to the alternate build, when you really do need to read the readme. > On 7 Apr 2020, at 19:32, Headington Heritage <headingherit...@outlook.com> > wrote: > > Hi > > I have just downloaded QGIS, MAC OS 3.12 and it fails to verify – “App can’t > be opened because Apple can’t check it for Malicious Software” > > The installation page states: > > Mac Installer Packages for macOS El Capitan (10.11) and newer. > > Installation instructions are in the Read Me on the disk image. > > > But there are about 20 Readmes , and going through these I cannot see one the > describes how to do this, reluctant to just use generic methods to bypass the > security. > > Also, it took quite a while to get into the dmg image and open it to view > contents. > > Any help as to the safest way to install would appreciated! > > > > Thanks > > > Mark > > Headington Heritage, A personal blog > > Visit : www.headingtonheritage.org.uk <http://www.headingtonheritage.org.uk/> > Email: headingherit...@outlook.com <mailto:headingherit...@outlook.com> > > Follow me on Twitter: @headingheritag > > > Thanks > > > Mark > > Headington Heritage, A personal blog > > Visit : www.headingtonheritage.org.uk <http://www.headingtonheritage.org.uk/> > Email: headingherit...@outlook.com <mailto:headingherit...@outlook.com> > > Follow me on Twitter: @headingheritage > > _______________________________________________ > Qgis-user mailing list > Qgis-user@lists.osgeo.org <mailto:Qgis-user@lists.osgeo.org> > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > <https://lists.osgeo.org/mailman/listinfo/qgis-user> > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user > <https://lists.osgeo.org/mailman/listinfo/qgis-user>
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