Dual boot system then - correct? correct.
Does the printer have an assigned static IP that is reserved for the printer via the printer's MAC? static ip from both the router and the printer settings. 192.168.0.48
Make and model printer? Wired or wireless connection? Dell Laser h625cdw - wireless
About the blocking: no error codes, pop-up windows, beeps, LED changes anywhere etc..? no error codes no pop-up windows no beeps or led changes.. the webpage just comes up on the dual boot but not the windows partition.
Will any other windows computers (if any) print when your computer is being blocked? yes all the pc's including both wired and wireless connections have no troubles getting to the printer anytime.
Open Windows 10 and check Reliability History/Manager and Event Viewer. Hopefully there will be some error code or warning there to be found that corresponds to the blocking.
https://nofile.io/f/HQxckZ3BXCP/03-04-19.evtx - i didnt see anything in particular but here is my event viewer save file maybe you can comb through it and see something.