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itsmycar
#179944256Sunday, December 20, 2015 4:24 AM GMT

I recently came across this problem. I was getting ready to play one of my favorite games until I came across this error. It stated that ROBLOX failed to open. Does anyone have a solution to this error? I'm currently using Mac OS X EI Captain 10.11.2. BuildersWorking
360noob
#179945597Sunday, December 20, 2015 4:45 AM GMT

ur not alone :/
vegasjon
#179947283Sunday, December 20, 2015 5:19 AM GMT

Anytime that happens to me, I just delete the application and re-download it (You have to delete both the ROBLOX Player and ROBLOX Studio). When you re-download it, don't search ROBLOX download; because, it may not work or may not be trustworthy. Just go on the website and click play on any ROBLOX game and it will show you the download info. Hope this helped you. -vegasjon
itsmycar
#185537087Thursday, March 17, 2016 9:44 PM GMT

I've tried that. But this time when I did, I got an error saying: There is no application set to open the URL. (Then states tons of characters) -BuildersWorking
kh6768
#193197895Saturday, July 09, 2016 11:42 AM GMT

I am getting these problems too when i try to download roblox. I have had roblox on this laptop before but i recently deleted it because it failed to upgrade multiple times. Now when i try to download again it says there is no application set to open up URL-roblox. I have deleted everything to do with roblox multiple times in attempts to get it working, i have restarted/shut down and reopened my laptop but all of this has failed. I have a MacBook Air 11inch screen and i am currently on 10.10.1 OSX Yosemite.
eTrashedBuggy
#193198243Saturday, July 09, 2016 11:54 AM GMT

I have a MacBook Pro (Intel Core i5) just restart your mac.. or if it dosen't work reinstall roblox or if it dosen't work email & contact roblox for more support. https://www.roblox.com/games/446410497/Random-game-1
EmperorShield
#193199574Saturday, July 09, 2016 12:30 PM GMT

I'd suggest doing the following: Re-Installing ROBLOX Launching the game -Problem Solved-
gameshakers6
#200527623Tuesday, October 25, 2016 12:59 PM GMT

u are not alone i have this problem now and i need urgent help
Regwan
#200527683Tuesday, October 25, 2016 1:03 PM GMT

Don't bump old threads! Instead, create your own! --Regan Lee. "Life is what happens to you while you're busy making other plans." ~John Lennon
uniquestarpilot
#221488075Sunday, July 16, 2017 6:48 AM GMT

I have a solution. Use Firefox or Safari instead of Chrome. I have tried: ==> Deleting ROBLOX player, ROBLOX studio, and the NPRoblox plugin. ==> Restarting the (Chrome) browser. ==> Attempting to start a game from the "Prison Life" page, but failed. ==> Rebooting the computer. ==> Attempting to start a game from the "Prison Life" page again, but failed. ==> Attempting to start a game from the "Build and Race" page, but failed. ==> Read through https://en.help.roblox.com/hc/en-us/articles/203313020-Roblox-Launcher-Plugin ==> Switched to Firefox from Chrome. ==> Successfully started a game from the "Prison Life" page.
iiOmqClx
#226094286Saturday, October 07, 2017 8:23 PM GMT

This happend to me alot ROBLOX if you read this you need to fix this bug in the next update if you can,, i tried to restart but it still ###### work i went on safari and firefox they both said " worng ######## " it turns out that i have to play on my ipad until this glich is gone - ###
enemyspottedmuch
#226546323Wednesday, October 18, 2017 11:55 PM GMT

heres what i did: click on download and install roblox do what it says for you to do wait for it to configure, once it says it installed (agree to the warning it gives u) click play and it should work HOPE THIS HELPED :D also it worked for me, if it didn't either have to use an ipad or somethin or reinstall OS X or whatever computer u use and reinstall all the things u use
FluffyMiwy113
#227418945Saturday, November 11, 2017 1:06 AM GMT

It says for me there is no application to launch ROBLOX and then a bunch of characters i tried downloading ROBLOX again but it kept telling me to do the application and download it and i use safari ;-;

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