Until a few days ago, the "Open in Excel" function worked perfectly.
After installing version 1812 (Build 11126.20169) they are no longer able to open office documents from sharepoint. I receive the message:
Sorry, we could not open 'https: //subdomain.domain: 447 / Path / document.xlsx'
The portal uses an unconventional TCP port but this should not be the problem since with the previous office version everything worked smoothly.
On other sharepoint portals with a single authentication method, the opening of office documents also works regularly with version 1812.
Does anyone know what may have happened or has the same problem?