Cannot access SL (web and grind) via Internet provider, but can via mobile network... Any ideas why?

[Rolig Loon]

It sounds like your router screwed up and lost the connection, or at least was losing enough data in transit that your viewer and the SL servers were severely out of sync.  Try just rebooting it (and your modem too, for good measure).  That may be all it takes.  Not to be pessimistic, but the other possibility is that the router has decided to die and needs to be replaced.  Mine did that last month, at a cost of slightly over $100.  One way to check that possibility is to temporarily unplug the cable from your computer to the router and then plug it directly into the modem, bypassing the router completely.  If everything works, chances are good that your router is in trouble.  (Don't leave the cable plugged into the modem, BTW.  You'll lose the firewall protection that your router has been providing, if you bypass it permanently.)  If you have been using a wireless Internet connection, I suggest moving to a direct cable or DSL connection.  Plenty of people have no trouble with wifi, but Linden Lab neither recommends nor supports it.

Incidentally, it is "normal" to get stuck at "Logging in ... " after you have had a severe crash.  The servers go through a standard routine when you log out, saving information about your last position and whatever.  If that routine is interrupted, the servers will think that you are still logged in ... at least until they sense that something is wrong.  It can take a minute or more before they close the connection completely, during which they won't let you log back in.

[Rolig Loon]

It sounds like your router screwed up and lost the connection, or at least was losing enough data in transit that your viewer and the SL servers were severely out of sync.  Try just rebooting it (and your modem too, for good measure).  That may be all it takes.  Not to be pessimistic, but the other possibility is that the router has decided to die and needs to be replaced.  Mine did that last month, at a cost of slightly over $100.  One way to check that possibility is to temporarily unplug the cable from your computer to the router and then plug it directly into the modem, bypassing the router completely.  If everything works, chances are good that your router is in trouble.  (Don't leave the cable plugged into the modem, BTW.  You'll lose the firewall protection that your router has been providing, if you bypass it permanently.)  If you have been using a wireless Internet connection, I suggest moving to a direct cable or DSL connection.  Plenty of people have no trouble with wifi, but Linden Lab neither recommends nor supports it.

Incidentally, it is "normal" to get stuck at "Logging in ... " after you have had a severe crash.  The servers go through a standard routine when you log out, saving information about your last position and whatever.  If that routine is interrupted, the servers will think that you are still logged in ... at least until they sense that something is wrong.  It can take a minute or more before they close the connection completely, during which they won't let you log back in.

[Kaya Angel]

I've had this problem to a number of times. I thought I had fixed it but it has started to happen again. Seems to really be triggered if I have two avatars on at the same time. I get the same limited use of some web pages. They either take ages to load or don't load at all. When this happens I either get impossible lag in-world or I can't do things like cross sims or even see other sims. The problem lasts for a time before returning to normal. I did find one article about this which pointed at it being windows defender. If you open up windows defender you can make exclusions as there is an "add an exclusion" options and I made sure I listed SL folders and so on. This seems to fix the problem but there was a windows update which seems to of started the problem again. Sorry, but I can't find the original link which had the suggestions. I can't work out truly what it is though. I know another who has the same problem as well as soon and she has more than one avatar online. But it does feel like something triggers windows to block or shut off something that gives limited connection. If anyone else has any input it would be interesting to hear?