Overwatch 2 Error Code BC-101 [Fixed]

The Overwatch 2 error BC-101 is a network error that occurs when you can’t connect to the official Blizzard servers. Identifying the exact cause can be a bit difficult, but typically, it’s attributed to either issues with your internet connection or the official servers.

Several things can go wrong with your internet, such as firewall restrictions, closed ports, or disconnections. For the servers, they could be down due to maintenance or backend issues. Regardless, I have provided the solutions to all of these problems.

Check The Blizzard Server Status

First of all, eliminate the possibility of any backend issues with the servers. Trying to troubleshoot the problem from your end when the servers are down will only waste your time. You can check the server status by going to the Overwatch 2 Downdetector.

Alternatively, you can head to the official Blizzard Twitter account to see if there are any updates regarding the servers. If the servers are down, Blizzard’s customer support account will tweet out the official cause as well.

Allow Overwatch 2 Through The Firewall

Your firewall is built to protect you from malicious viruses spread across the internet. However, it can sometimes accidentally flag safe applications as well. This can include Overwatch 2 or its launchers. To fix the issue, you must allow these applications access through the Firewall.

This is a popular solution for network errors, which is also officially recommended by Blizzard.

Open Network Ports

Ports are unique numbers that help guide data packets and make communication between 2 PCs possible. Every network endpoint has a port number assigned to it, making it easy to identify that endpoint. Similarly, the Overwatch 2 servers also have ports that make it possible to establish a connection.

If these ports are blocked on your network, communication will become impossible. For Overwatch 2 error fix BC-101, you must manually open these ports on your network.

Here are all the required ports for each platform:

PlayStation 4 & 5:

• TCP: 1119, 3478 – 3480, 3724, and 6113.
• UDP: 3074, 3478 – 3479, 5060, 5062, 6250, and 12000 – 64000.

Xbox One & Xbox Series X:

• TCP: 1119, 3074, 3724, and 6113.
• UDP: 88, 500, 3074, 3478 – 3479, 3544, 4500, 5060, 5062, 6250, 12000 – 64000.

Nintendo Switch:

• TCP: 1119, 3724, 6113, 6667, 12400, 28910, 29900-29901, and 29920.
• UDP: 1024 – 65535.

Follow these steps to open ports in your router’s configuration:

1. Note down your router’s login information and IP address located at the back of the device.
2. Open a browser > enter the IP address in its search bar > press enter.
3. Log into the router’s configuration.
4. Find the port forwarding setting, usually located in the advanced category.
5. The setting is typically called NAT or Port triggering in most routers. 
6. Enter the port values for the applicable system > save > restart router. 

Optimize Your Internet

Sometimes, a bad internet connection might be the root cause of every error you face. It could be slow speeds, packet loss, or random disconnections. In case of slow speeds, make sure to test your internet connection and confirm you are getting more than 4 MBPS of download and upload speed.

To get higher speeds, you have no choice but to upgrade your internet package. If you are getting packet loss, you must contact your internet service provider. Packet loss is largely caused by congestion or bad fiber cables from your ISP’s end. 

I recommend all WiFi users to invest in an ethernet cable as well. These cables are cheap and can significantly improve your online experience. By establishing a direct connection with the router, you can utilize maximum speeds and get consistent latency.

My Analysis Of Error Code BC-101

It appears that Blizzard is prone to many DDOS attacks, which is what I believe to be the reason behind this error.

[#Bnet] We continue to actively monitor an ongoing DDOS attack which is affecting latency/connections to our games.

— Blizzard CS – The Americas (@BlizzardCS) June 25, 2023

The issue was greatly widespread and many reports spanned across the official Blizzard forums and Reddit communities. The correlation between all these reports is that they all start popping up whenever the servers go down.

This is a recurring issue because DDOS attacks can sometimes happen quite frequently. However, Blizzard is quick to address these issues and they always post an update.

#Bnet The DDOS attacks that we were monitoring have ended. If you are still unable to log in try https://t.co/NY39q2slWo

— Blizzard CS – The Americas (@BlizzardCS) June 25, 2023

Additionally, Blizzard has an official support article for this exact error, which generally guides you to diagnose the issue on your end. This means that the error also appears when the disconnection to the server is on your end.

I believe this is also one of the reasons why the error is timeless and so widespread. Regardless, it shouldn’t be too hard to diagnose and fix. I’m confident that my “Overwatch 2 error fix BC-101” guide will resolve the error for you.

Next:

• Overwatch 2 Error Code BC-153
• Overwatch 2 Error Fix HF-5
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