Have you ever encountered the Rainbow Six Siege error code Windows when you play it?
The error code 3-0x000c0054 is one of them.
This error code means servers are unreachable.
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So, how to fix Rainbow Six Siege error code 3-0x000c0054?
You need totroubleshoot the networkfirst.
If your online grid is stable and fast, you’re free to try the following methods.

How to get rid of Rainbow Six Siege error code 4-0xfff0be25 when gaming?
In this post, we will provide you with a detailed guide.
A bad data pipe will cause many connection problems.

The operations are as follows.
Step 1: Right-punch theStartbutton and chooseSettingsto open it.
Step 2: In prefs, click onNetwork & Internet>Status.
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Step 3: UnderAdvanced web connection prefs, selectNetwork reset.
Step 4: choose theReset nowbutton.
In the prompted window, clickYesto start resetting.
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Your DNS cache might have the old address, leading to errors when accessing the site.
In this case, you are expected to flush the DNS caches to fix this error.
Here is how to do it.
Step 1: Open theSearchbox, typecmd, right-click onCommand Promptfrom the result list, and selectRun as administrator.
Step 2: When prompted byUAC, click onYesto continue.
Here are the steps to change it.
Step 1: Press theWin + Ikeys to open theSettingsapp.
Step 2: Click onNetwork & Internet>Ethernet>Change adapter options.
Step 3: Right-opt for Ethernet and chooseProperties.
Step 4: UnderNetworking, selectInternet Protocol Version 4 (TCP/IPv4)and choose thePropertiesbutton.
Step 5: UnderUse the following DNS server addresses, setPreferred DNS serveras8.8.8.8andAlternate DNS serveras8.8.4.4.
If you meet the DNS server unavailable error, then you cant connect to your Internet.
Thus, it’s possible for you to read this post to get some methods to fix it.
If this game is not allowed through the firewall, this error code is likely to appear.
So, you are supposed to allow it through the Firewall according to the instructions below.
Step 1: Open theControl Panel, change the view toLarge icons, and selectWindows Defender Firewall.
Step 2: ChooseAllow an app or feature through Windows Defender Firewall.
Step 3: Click onChange configs>Allow another app.
Step 4: Click onBrowse, find the executable file of Rainbow Six Siege, and hitAdd.
Step 5: Find the app you just added, and tick the boxes underPrivateandPublic.
when you land finished these steps, terminate the window and reboot your PC to save changes.
The Windows Firewall may prevent your program from jump into the Internet.
This post shows you how to allow a program through Firewall Windows 10. you might choose one of them according to your preferences.
Hope they can fix the error to give you an enjoyable gaming experience.