Microsoft Security | Microsoft Defender | Other
Additional Microsoft Defender tools and services that provide security across various platforms and environments
How to solve thisthis installation package could not be opened. contact the application vendor to verify that this is a valid windows installer package.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(300.8, 46%, 39%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EYZ%3C/text%3E%3C/svg%3E)
yeoh zi hui
0
Reputation points
How to solve this problem' installation package could not be opened. contact the application vendor to verify that this is a valid windows installer package.' I had downloaded the QGIS software and when tried to open the file, it pop up this message.
Microsoft Security | Microsoft Defender | Other
-
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(300.8, 28.000000000000004%, 39%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ECK%3C/text%3E%3C/svg%3E)
Catherine Kyalo 3,180 Reputation points Microsoft Employee2026-04-16T15:52:23.5466667+00:00 Did you confirm that it is .exe or .msi windows installer package?
Sign in to comment
1 answer
Sort by: Most helpful
-
Deleted
This answer has been deleted due to a violation of our Code of Conduct. The answer was manually reported or identified through automated detection before action was taken. Please refer to our Code of Conduct for more information.
Comments have been turned off. Learn more