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Some PS4 users are unable to sign into their PSN (PlayStation Network) account from the PS4 console. While sign-in works fine on PC, it fails on PlayStation with the NP-40831-6 error code. This error code essentially indicates that Sony is actively preventing your IP from connecting to the PSN network because it considers it a threat. In this case, the simplest solution is to route your connection through a VPN network hosted on a desktop computer. As it turns out, you can also expect to see this problem in cases where it is caused by a widespread server problem over which you have no control. The only thing you can do in this case is confirm the problem and wait for Sony to resolve their server issues.
Depending on your router model and ISP, you may see this error message as a result of a simple IP or TCP inconsistency that affects PSN network connectivity. In this case, you can resolve the issue by rebooting your router or resetting the network connection entirely. According to some affected users, this issue can also occur if your ISP forces a bad DNS range or automatically assigns an MTU value that is insufficient for the current connection.
In this case, you can resolve the problem by manually configuring the network with a different DNS range and sufficient MTU bandwidth. Under certain conditions, you might expect to see this error if a mandatory firmware update fails to install due to a bug. In this case, you can solve the problem by booting into Safe Mode and performing the update from there. We have mentioned steps below to Fix PS4 NP-40831-6 Error
Ways To Fix PS4 NP-40831-6 Error
Reset a Router
Check for PSN issues
One of the most likely causes of the NP-40831-6 error code is a problem with the PlayStation servers. There are two things you can do to check. One method is to check the server status on your PS4 and the other is to visit the official Sony PlayStation website. If you are unable to run a check on your PS4 for some reason, the second option may be useful.
Update firmware via Safe Mode
According to some affected users, this issue can also occur when a glitched update prompt does not appear, even if a mandatory update is required before connecting to the PlayStation Network. Several affected users who were experiencing the same issue have confirmed that they were able to resolve the issue by entering Safe Mode on their PS4 and forcing the firmware installation from there.
Try using a VPN
Another option is to use a third-party Virtual Private Network (VPN) to obtain a new public IP address. There are numerous VPNs available, so you must decide which one to use. While free VPNs may occasionally work, the speed may be poor and unsuitable for online gaming. Do some research on the best VPN to use in your country, as the quality and security of such services varies greatly.
Use free third party DNS
For others, changing their PS4’s DNS resolves the NP-40831-6 error code. If you are still experiencing this issue, you should consider using one of the other DNS servers available.
Final Words
So here we conclude our article on How To Fix PS4 NP-40831-6 Error. The PlayStation 4 (PS4) is one of three major video game consoles on the market today, along with Microsoft’s Xbox One and Nintendo’s Switch. It was released in late 2013 as part of the video game console’s eighth generation. The PlayStation 4, the successor to the PlayStation 3 and the wildly popular PlayStation 2, packs more power in a smaller package than its predecessors. If the error persists, you can visit PlayStation support center for further help.