I use an iMac at work and I connect to a windows 10 shared drive. After updating to Catalina, I cannot access the SMB shares at all. Strangely enough I can access them through parallels (Windows 10) but not from the MacOS side. I found online that NetBios is disabled by default in Catalina... So I created the file again, to allow NetBios to be enabled, with no success. I’ve also disabled file sharing and re-enabled it too. Nothing works. Frustrated, I went back to my recent time machine backup with Mojave and everything is back to normal. Anyone have any luck?