Dynamic Lighting issue for some players

Two of my players who are on the same internet connection cannot see dynamic lighting at all.  They are using different browsers and have both tried disabling ad-block and changing browsers.  They tried reloading the page, and I tried turning on and off dynamic lighting and switching their page. Here's a screenshot of what one of my characters sees from my perspective using CTRL+L and from his perspective. This one is from my perspective And from his perspective. You can see that the dynamic lighting is working, but for some reason not on his side. Any ideas?

First and foremost, they aren't co-GM's on the game at all are they? This would give them a GM view of things which naturally overrides the DL. If so, they can use the settings tab to log in as a player for the sake of actually playing (and then use the url once in as 'players' to get back into the game as such each time without having to toggle it each time). If they aren't, each of them will need to follow Steps 1-3 of our Solving Technical Issues wiki page, taking special care to temporarily disable all browser add-ons and extensions, temporarily pause your anti-virus, and try switching browsers (for Chrome/Firefox specific issues) to see if one of those components is causing the problem. If all of that fails, please follow Step 4 , including providing all of the necessary information, so that we can further assist you.

Rohain, when you say it's not working for your players, does that mean that the players sees nothing, the VTT is all black, or that they see everything as though Dynamic Lighting isn't turned on?

I've just been told I have the same issue; I'm the sole GM of my campaign, but one of my players told me he could see the whole map.  It shouldn't be an issue with my set-up for Dynamic Lighting (another player told me it was working exactly as it should, and most of his sight was restricted) 

I asked the affected players to switch to another browser which they downloaded, and that fixed the issue.  To be clear they were able to see through all dynamic lighting. It worked for other players in the game, but not for those two.  Switching to Firefox fixed the problem.

Barry P. said: I've just been told I have the same issue; I'm the sole GM of my campaign, but one of my players told me he could see the whole map.  It shouldn't be an issue with my set-up for Dynamic Lighting (another player told me it was working exactly as it should, and most of his sight was restricted)  Hey, Barry P. I've witnessed that similar issues often have distinct causes and solutions. If switching your players over to a different browser doesn't work for you as it did Rohain , you might do well to work through all of the troubleshooting steps posted earlier in the thread by Ziechael of the Roll20 Mod Team, with an emphasis on acquiring console logs from your players (step 4). Opening a new thread for your own troubleshooting might be best.

Same here, Our dynamic lighting is acting VERY strange last 2 weeks. Same issues, some people cant see lighting at all (pitch black), others can see 'behind' them in a darker shade outside there 'view sight angle'. This is on pages that haven't been touched in months (world map) and did work fine. It started last saturday we noticed it. And on 2 different campaigns. One think i DID notice, is selecting them and hitting cntl-L gives me no view (all black) even with a dynamic light at their feet. And only checkbox on is "dynamic lighting enabled" on the pages setting. But If I move it token layer (the light) they can see it. Its as if lighting on that layer isnt working We tried on firefox, and chrome for 2 different players, same thing. (IE, edge too, but didnt expect much from them)

Update: It seems tied to "all players see light" on the lighting tokens. That is the light the players cant see..if I give them control of it as assigned to thier sheet, they can see from it. if its a general light that has that checked, its as if it ignores that setting..they can only see lights that are assigned to their tokens.