Achievement unlocking failed with error 304

Hi and thanks for reaching Microsoft Xbox gamer's community. My name is Josef.

I'm an Independent Advisor and a Microsoft Xbox user like you.

Hope you're doing great today A

Is this happening only when you play FNAF buddy?

This error happens when there's an issue between your connection/game servers, so probably is appearing when you are making progress to unlock it.

Could you try using a different wifi network to see if the error keeps appearing?

Also, check which NAT type do you have on the console:

Open Settings > General > Network config

In the meantime do this on the console:

1. Turn off your console by pressing the Xbox button on the front of the console for about 10 seconds, until it shuts down completely.

2. Unplug the console's power cable from the console and from the power outlet. Wait 5 minutes.

Important: Be sure to wait at least 5 minutes. This step resets the power supply.

3. Plug the console power cable back in.

4. Press the Xbox button on your console to turn it on.

After that, try to remove and re-add your profile on the console.

In case you need it, here's how to remove and re-add:

https://support.xbox.com/en-US/help/account-pro...

Also disconnect your router from power for about 3 minutes. Then connect it again an when everything is working, try again

I'll be waiting for you answers, greetings from another Microsoft user

If you are an achievement hunter though, the weapons will all unlock well before all achievements are unlocked since you get points for failed missions too.

I'm having achievements in Back to the Future and Cubot fail to unlock as well.

Hi,

here's a link to the achievement trouble shooting page
http://support.xbox.com/en-AU/games/troubleshooting/troubleshoot-achievements-challenges

and if you didn't find the solution you were looking for there's also a thread here which was helpful to me

https://forums.xbox.com/en-AU/thread/88E985A3-4139-430C-9400-93771D0C1004

Hope this helps.

Hi Papi, I'd just like to add that I have attempted those two links. I have also performed the following troubleshooting methods:

> Creating a new save of the game, destroying the tower of sauron and killing the hammer (achievement requirements, 'Gorthaur the Cruel' and 'The Hammer falls', respectively)

> Uninstalling and then reinstalling the game, creating a new save and playing through to the required missions.

> Completing the steps listed here: https://www.trueachievements.com/forum/viewthread.aspx?tid=782799 which follow:

1) I deleted all my Shadow of Mordor game save data, local and cloud, and deleted my profile from the console. Did a power cycle switch off (held console power button down)

2) Turned Xbox back on, added my profile back. Did another power cycle off.

3) Disconnect Xbox from the Internet (mine is cabled, not wireless)

4) Turn on, play only Shadow of Mordor and earn the stuck achievement (it won't pop because you're offline so double-check that you would have earned it)

5) Reconnect to Xbox Live and when your achievements resync up with the cloud it should pop and unlock. Mine took about 5 minutes to pop.

> Completing an OS reset (keep games and apps), which subsequently deleted all data off my hard drive, including the game in question.

The steps I completed caused me to lose my 100% save game in SoM which I was hesitant to lose but thought it would rectify the issue, which it did not.

Can't seem to find any other solutions, nothing in online forums or on Xbox support seem to fix the issue.