second life cannot be accessed from this computer

[Merel Heron]

from one moment to the other it is impossible to login into SL from this computer. (Second Life cannot be accessed from this computer).Logging in from other computers in the household remains possible with the same SL account.

Tried everything including restarting router and computer but the result is the same. What can I do.

[Chic Aeon]

There have been LOTS of similar reports on this issue so I suspect it is not the typical "BAN" that most often accompanies this message. You might try a live chat session if you are premium. With so many folks in the same boat, I suspect Linden Labs knows there is an issue and is trying to fix it. Good luck.