In order to deploy the TIFF Viewer Chrome extension through Group Policy, one must install the TIFF Viewer application without the Chrome / Edge extension, since the extension will be deployed by Group Policy rules separately.
To install the TIFF Viewer using the MSI installer without the Chrome / Edge extension, please use the CHROME=0 parameter in the MSI installation command, as in the following example:
msiexec.exe /i "<<PATH>>\TiffViewerSetup.msi" CHROME=0 /q
The command will install the Tiff Viewer silently, without the Chrome / Edge Extension, and the Google Chrome and Microsoft Edge will open the PDF documents with the default built-in PDF viewer.