Hi I am having trouble connecting a macbook pro 15 2017 to a windows network at my workplace. I connect via a LAN cable and so far, it has worked to connect to the network drives via CIFS. Earlier, I connected via SMB but after 20 minutes or so it froze my macbook. Now, CIFS does not work anymore. It works for about 20-30 minutes. My internet also stops working. Then I have to take the LAN cable out and then reboot. Unfortunately, the IT administrator at work can not figure it out, but he does not support mac. Are there any others who have that problem? And maybe a solution ? Many thanks in advance for your help.