INSTALLER INTEGRITY ERROR 

Solution: Follow the below steps.

Step 1: When you see installer integrity error\error loading file\common issue is incomplete download\damaged file while installing desktop app then delete the current file 

Step 2: Download new desktop setup

Step 3: Exclude the setup file from Antivirus

Step 4: Right click on the Setup file > Properties > Unblock (as shown in the image). File is installed and desktop will open

> If resolved

>>Disposition: Desktop Trouble shooting - Desktop_app_setup