To add or remove a file type to be viewed in the PCC for SharePoint viewer:
- Open c:\programdata\accusoft\prizm\PCC-WOPI\viewer-webtier\pcc.config
- In the wopi-extensions element, add, remove, or comment out the extension(s).
- Update the WOPI bindings by running Update-PCCWOPIBindings.ps1 (see Setting up PCC for SharePoint for instructions).