Note: Universal Plug and Play (UPnP) is the protocol that your Xbox console is designed to use by default when having to set up your router for multiplayer gaming and chat. After investigating this issue and attempting to replicate the issue on our machine, it turns out that several different scenarios might be responsible for the apparition of this error code. Here’s a shortlist of potential culprits that you might want to investigate: Now that you are familiar with every scenario that might force your console to throw the ‘UPnP Not Succesfull‘ error, move down below for a series of troubleshooting guides that other users have successfully used to resolve the problem:
Ensure that UPnP is Enabled in your Router settings
Before exploring other troubleshooting guides, you should start by ensuring that UPnP (Universal Plug and Play) is enabled on your router. Note: UPnP has become an industry standard for years now, so if your router is newer than 4-5 years, this network feature should be available for you. In most cases, this issue will occur because the Network Address Translation (NAT) is not opened for the network that your console is connected to. Xbox One and Xbox Series X users who also dealt with this problem have reported that they finally managed to fix the issue and play the game normally after accessing the Settings page of their router and manually enabled UPnP from the advanced menu. After doing this and restarting their router, you should see the issue resolved and the ‘UPnP Not Succesfull‘ should no longer appear when you access the Network menu on your Xbox console. If you find yourself in this scenario, follow the instructions below to enable the UPnP (Universal Plug and Play) option on your router/modem. Note: In case your router doesn’t support UPnP, the instructions below won’t work for you. Here’s what you need to do to enable UPnP from your router settings: If you’re still encountering the same ‘UPnP Not successful network error message when accessing the Settings menu of your Xbox console, move down to the next potential fix below.
Restart or Reset your router
If you previously made sure that UPnP is enabled in your router settings and your console is still unable to utilize this technology when it has to facilitate multiplayer games, the next most likely culprit is a TCP or IP issue facilitated by a problem with your router. In this scenario, you have 2 different ways of fixing this problem:
Restart your router – This will successfully refresh your current IP and TCP data that your router is using without making any persisting changes that might ultimately affect your network interaction. However, if the problem is not related to TCP and IP cached data, this method will not do much for you. Resetting your router – If the simple restart procedure doesn’t work for you, resetting your currently saved router settings will revert the device to the factory state in addition to clearing the cached data. However, keep in mind that if your ISP is using PPPoE, this operation will also reset the currently saved credentials.
Restarting your router
If you wish to start with something that doesn’t run the risk of affecting your immediate access to the Internet, a simple router reboot is an ideal way to start. This operation will clear the currently saved Internet Protocol data and Transmission Control Protocol data. To perform a reset on your network device, start by identifying the power/switch button (typically located on the back of the device) and press it once to cut off the power. As soon as you do this, go ahead and disconnect the power cable from the power outlet and wait for 1 full minute or more. Note: Keep in mind that disconnecting the power after you turn your router off is essential since it allows the power capacitors enough time to drain and clear any temp data that they currently might be maintaining in between restarts. If restarting didn’t fix the problem, move down to resetting your network restart.
Reset your router
In case a simple reset didn’t do the trick for you, the next step is to go for a complete router reset to ensure that no setting or network-related cached data is currently causing the UPnP issue. Important: Before you go ahead and reset your network device, it’s crucial to understand what this operation will do to your current network setup. It will reset your router back to its factory resets, which means that any forwarded ports, blocked items, and any other custom settings. Additionally, if your ISP is using PPPoE, a router reset will mean that the currently saved credentials will be ‘forgotten‘. So once you go through with the reset procedure, you’ll need to recreate the PPPoE connection. Now that you understand the consequences of this operation, you can initiate a router reset by finding the reset button (typically located on the rear of your router). Once you see it, pressing it and keeping it pressed until you see all the front LEDs flashing at the same time. After the router is reset, re-establish the internet connection by reinserting the PPPoE credentials supplied by your ISP (if necessary) and see if your Xbox console is now capable of handling multiplayer games without displaying the same ‘UPnP is unsuccessful’ message. If the problem is still not fixed even after you rebooted or reset your router, move down to the next potential fix below.
Clear the persistent storage cache
If you’re encountering this issue while playing a game from a game disk (physical media), you may be dealing with an inconsistency affecting the persistent Blu-Ray cache that Xbox One and Xbox Series X / S maintain. Several affected users that we’re dealing with the same issue have confirmed that they managed to fix the ‘UPnP is unsuccessful; error message by reinstalling the Blu-Ray app and then clearing the persistent Blu-Ray cache storage before repeating the action that ultimately triggers the error code. Immediately after you do this, your console should prompt you to install from the Xbox store (since the Blu-Ray infrastructure is missing). When this happens, all you have to do is click Install and follow the on-screen instruction. If you’re looking for a guide through the whole process, follow the instructions below: In case this problem is still not resolved, move down to the next potential fix below.
Clear the alternate MAC address
If you’re encountering the Unknown Network Error on an Xbox One console after you’ve manually set up a MAC address in the past (or brought a used console), a MAC address may be inhibiting your console’s ability to connect to the Internet. In case this scenario looks like it could be applicable, you should be able to fix the problem by accessing the Settings menu on your Xbox One console and clearing the Alternate MAC address that’s currently saved. Note: This Alternate MAC address was put in place by Microsoft to allow users to utilize network features on restricted networks like hotels, public WI-Fis, hospitals, schools, etc. If you suspect that an improper Alternate MAC address is causing the problem, follow the instructions below to clear this address from your computer: If the same problem is still occurring, move down to the next potential fix below.
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