Hi mycc,
Can you please confirm whether you are still seeing the error you mentioned above, while connecting to webDAV server with Dreamweaver 20.2, so that we can investigate the issue at our end.
Also as you mentioned using your url without a port has fixed the issue, but without using the port in the url is the error not seen with Dreamweaver 20.1 and seen with only 20.2.
Thanks
Dreamweaver Team
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