Workaround:
Please extract the Zip file on you’re the local PC. Example (Binary Tree Directory Sync Pro for Active Directory 20.10.1.zip)
Open CMD prompt as Admin
Navigate to Binary Tree Directory Sync Pro for Active Directory 20.10.1. folder or where ever you unzipped the files to.
Now execute the following command
"Binary Tree Directory Sync Pro for Active Directory 20.10.1 Installer.exe" /silent /stage_only ISRootStagePath="C:\Temp\DSP"
Check the Task Manager to confirm the task has completed.
Now you should navigate to the C:\TEMP\DSP folder and click on each folder until you see the DirSync32BitSetup executable. Hint there will probably be 4 files there. When you find DirSync32BitSetup.exe run it.