Error trying to run script to enable the BlockDownloadOfAllFilesForGuests setting in Sharepoint Online Management Shell

I am having trouble getting the BlockDownloadOfAllFilesForGuests setting set for my Sharepoint/Onedrive account.  The feature is detailed here: https://social.technet.microsoft.com/wiki/contents/articles/39497.onedrive-for-business-sharing-settings-with-powershell.aspx?Redirected=true#Block_Download

I am using Sharepoint Online Management Shell version 16.0.8316.0.

I have downloaded and installed the latest COM  from here: https://www.microsoft.com/en-us/download/details.aspx?id=42038   
using file sharepointclientcomponents_16-6906-1200_x64-en-us.msi

After downloading the script from this page, https://gallery.technet.microsoft.com/office/Block-of-all-files-for-2ad7a0db, and following its instructions I am getting the error below:

Exception calling "ExecuteQuery" with "0" argument(s): "Updating this tenant property is currently disabled."
At C:\BlockDownloadOfAllFilesForGuests.ps1:25 char:3
+   $ctx.ExecuteQuery()
+   ~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [], MethodInvocationException
    + FullyQualifiedErrorId : ServerException

Any help would be greatly appreciated.