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A question that hasn't been asked what is the AV software you are running?. As lummis's reply the error message indicates that it is getting blocked by this in someway. It would help somewhat to say what AV you are running even if it is outwith the support of the forum on how to use individual AV ...

I doubt that this has anything to do the software itself.
The setup (which copies the files) has not been changed since version 14.
Also, no one else has reported any issues with this. WB16 has been available for a few months now.

The error indicates an issue with permissions. It looks like the ...

Did you also check Windows randomsware protection?
If you previously installed an older version then Windows randomsware protection may think this is another application that is trying to access the folder.

What you can try is rename the folder before running the setup, so it will be re-created ...

It even gave me the same error with admin rights, antivirus software turned off and even windows defender off.

This only happens when installing the WB16 installer. However I can install other software.

Hi,

Can anyone help me with this error? I'm trying to install web builder version 16/16.1 (I tried both) yet the below error is preventing me from installing on latest Win 10.

Has this happened to anyone else?