Cant open documents using webdav

Hi i have installed nextcloud version 11 and am having issues opening office documents

for instance i have excel documents that open up fine when synced with nextcloud, but if i try and open any using webdav it gives error sorry cant open document

Your client application might not support dav(s) What document are you trying to view/open and what application are you using to access the document and with what application are you trying to view the document. What Operating system are you using.?

trying to open excel docs and word docs

in microsoft office

i also have external storage configured pointing at a fsmb share but have issues connectiong to that via webdav