After investigating this particular issue, it turns out that there are several different causes that might contribute to the apparition of this error code. Here’s a shortlist of culprits that were confirmed to cause the 47439999 error code:
Method 1: Clearing the Temporary Internet Filles and Cache in Chrome
Since the Gamestream technology is built around Chrome, you are stuck with using this browser if you want to use GameStream to jump on co-op games with your friends. But this also means that if you have an issue with your browser, you should expect it to reflect on the streaming attempt. Fortunately, in most cases, the 47439999 Gamestream error code is most likely caused by a bad cookie saved in association with Nvidia Experience. In this case, you should be able to fix this problem by clearing the cache and cookies on your Google Chrome installation. If you haven’t tried this already, follow the instructions below to clear the cache and cookies on your Google Chrome installation: If the issue is still not fixed, move down to the next potential fix.
Method 2: Forwarding the Ports used by GameStream
According to some affected users, this problem can also occur due to the fact that some of the ports that GameStream actively uses are blocked (either by your router or by some kind of firewall). In case the first option is true (ports are blocked by your router), you will be able to fix this problem by ensuring that the ports used by GameStream are forwarded and readably accessible. And when it comes to doing this, the easiest way is to simply enable UPnP (Universal Plug and Play) in order to ensure that the required ports are forwarded automatically. The steps of enabling UPnP from your router settings will be different from manufacturer to manufacturer – But typically, you will be able to do so by accessing your router settings and enabling UPnP from the Advanced tab. However, if you’re using an older router model, chances are it might not support Universal Plug and Play – If this scenario is applicable, the only way to fix the 47439999 (if the issue is caused by a blocked port) is to forward the required ports manually. If you don’t know how to do it yourself, follow the instructions below: Note: These steps are only approximate as your screens will be different depending on your router manufacturer, but the ports that need to be forwarded remain the same. In case the same 47439999 error code is still occurring, move down to the next potential fix below.
Method 3: Disabling every Nvidia Service
This might seem like a weird fix, but some affected users have managed to fix the problem by using the Task Manager to disable every Nvidia service prior to opening Nvidia Experience and launching the GameStream feature. We have no official explanation on why this is effective, but some affected users are saying that it’s probably a rogue Nvidia Experience service that’s causing the 47439999. If you want to try out this fix, follow the instructions below to use Task Manager to stop every Nvidia-related service before launching the GameStream feature: In case you still end up seeing the same 47439999 error code even after stopping every involved Nvidia service in advance, move down to the final potential fix below.
Method 4: Using a Hamachi VPN
As it turns out, you might also encounter the 47439999 error due to the fact that your iSP provides a shared IPv4 by default, which ends up conflicting with GameStream / Nvidia share function. If this scenario is applicable, you should be able to fix the problem by using a VPN to make it seem that you’re not using a shared IPv4. When it comes to doing this, the easiest way to do it is to simply install a conventional gaming VPN. However, if you want to maximize your chances of success (especially if both you and the friend you’re trying to play with are seeing the same error), the proper way to do it is to use Hamachi (or a similar app) to create a dedicated VPN network that you’re both connected to when using GameStream. Note: This might make your ping higher, but it’s still better than not being able to play the game at all. Follow the instructions below to install hamachi and set up a VPN network to use with your friends when utilizing the GameStream:
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