General Connection Problems

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Please read through all the information below and try all of the suggested steps for issues pertaining to connecting to Roblox.
 
Signs of Connection Problems
  • Roblox has trouble with or fails to load online games, sometimes showing the player an error message (which can include "Could Not Connect" or "ID=17 Failure" messages).
  • Loading screen on the website takes a long time or never finishes to load.
  • Player can visit games in the Build or Edit modes, but not in Play mode.
  • Games randomly or consistently tell you that they have shut down.
Why It Can Happen
  • Firewall:
    This is very frequently a firewall problem, though it can be (in very few cases) the result of a low-bandwidth connection or a inconsistent wireless connection.
  • Slow Internet Connection / Big Game:
    If you are playing on the internet on really slow service, and the game is big, it can take a good bit of time to actually download the map. Give it a little while. Roblox may run on Dial-Up connections, however, your experience will not be optimal. To see what speeds Roblox requires, as well as other system requirements, please click here.
  • Empty Game / Place:
    If the map seems to be running, but is unusually devoid of stuff, then the map did in fact load. The game's creator probably just didn't build anything in it, so it is empty. You can tell when a map is done loading once your avatar appears.
  • Bad Game / Place:
    The game could be bad. There could be a bad script in it, or it has too many objects, which is preventing the game from running properly. Inform the creator of the problem, as only he/she will be able to repair it.
What to Do
 
Please try each step below, one at a time, in order. If one solution doesn't work, move on to the next!

1.) Make Sure You’re Using a Supported Browser

Make sure you are using the most updated version of your browser to Play Roblox. For Roblox Studio, you will also need to have the most updated version of Internet Explorer. If you are having issues playing with your current browser, please try playing on a different browser, such as Firefox or Chrome.

2.) Reset Your Internet Options (Windows Only)

Many times, a simple reset of your Internet Options is all you need. Please keep in mind that these steps will need to use Internet Explorer, but will fix many problems even for players that use other browsers such as Chrome or Firefox. Please try the following :

  1. Open Internet Explorer (this browser specifically)
  2. Open the gear icon > Internet options
  3. Open the Advanced tab
  4. Click the reset button
  5. Close Internet Explorer
  6. Try playing again

3.) Check Your Browser’s Security Settings

You will need to ensure that the security settings on your browser allow for Roblox. If these settings are set too high, it can cause a variety of problems ranging from what is listed at the top of this article to website issues such as buttons/links not responding. For assistance with this, please click here.

4.) Check Wireless Connection

You can rule out the wireless connection by switching to a wired connection if possible. If it’s not the connection, or if you can't try a wired connection, then check your firewall's settings, which we will discuss below.

5.) Remove/Disable any Ad-blocker Browser Add-Ons

Browser Add-Ons/Extensions can cause a number of issues, and in particular, Ad-blockers can stop a game from fully loading. For more information on how to do this, please click here.

6.) Make Sure the Appropriate Ports are Open

The ports that Roblox uses is dependent on the Operating System used. The port range is currently UDP 49152 - 65535, so keeping all these ports open should allow Roblox to connect to your router properly.

7.) Configure Your Firewall and/or Router

A lot of antivirus or internet security software tries to control which programs can access the internet. Often, these programs err on the side of caution and by default no program is allowed access. For assistance with looking into this and allowing Roblox through any blockages, click here

8.) Reinstall Roblox

As an extra measure, please reinstall Roblox. For assistance with this, please click here.

More Information

For more information on technical related matters, please see the following links: