[Qgis-user] can't open QGIS

[Andrea Giudiceandrea]

> Stina Johannesson stina5 at hotmail.com
> Mon Aug 25 13:12:42 PDT 2025

> When I try to open QGIS (after having downloaded it successfully on MacOS) it says that it won't open since "Apple couldn't verify that it's free from sabotage programmez that can damage the computer or adventure your integrity".

Hi Stina,
have you already read and followed the instructions provided in the 
Download page for macOS at 
https://qgis.org/download/#tips-for-first-launch ?

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Tips for first launch
After installing QGIS, the first launch attempt may fail due to Apple’s 
security framework.

For macOS Sonoma (14) and earlier: To enable QGIS, command-click on its 
icon in your Applications folder and select Open in the context menu. A 
confirmation dialog will display where you need to click the Open button 
again. This only has to be done once.

For macOS Sequoia (15) and newer: To enable QGIS, command-click its icon 
in your Applications folder and select Open from the context menu. A 
warning dialog will appear; click the Done button. Next, navigate to 
System Settings > Privacy & Security and scroll to the Security section. 
You should see a message stating that “QGIS” was blocked to protect your 
Mac. Click Open Anyway. A confirmation dialog will appear; click Open 
Anyway again. This only has to be done once.
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