My PC just installed (on its own...) the Creator´s update. On the beginning I just got minor issues but today it surfaced a major one  - my home network has been messed up!

I made a search and it seems this is a very common issue, It seems it is a Creator´s update driven problem.

In my case my main PC (that has the Creator´s update) sees OK my laptop but I cannot access my main PC from the laptop (nor can I have access to the FS shared drives/folders). It requests a username/password to access but I don´t have any!

Does anyone faced this issue and most importantly has a solution? Those I found at the net didn´t solve this problem.    

Thanks in advance

It seems I fixed this issue (...not quite sure how, anyway...).

Sounds like it is trying to re-establish sharing permissions after the update. What exactly does the window that wants the username and password say? I had to verify my Microsoft ID recently.