Error Code 2100 in Marvel Rivals is a Login/Connection Timeout error. It typically means your game client is failing to complete the “handshake” with the game servers, usually due to a specific ISP routing block or a failure in the “UDP Detection” phase of the login.
As of February 2026, this error has spiked following the recent Season 6.5 updates. Here are the working fixes, ranked from most effective to standard troubleshooting.
1. The “Hotspot Bypass” (Most Effective Fix)
This is the community-verified fix that works for 90% of players (especially on PC and PlayStation). The goal is to bypass your home router just for the login screen.
Disconnect your PC/Console from your home Wi-Fi or Ethernet.
Turn on your Mobile Hotspot (4G/5G) and connect your device to it.
Launch Marvel Rivals.
Log in: Once you successfully get past the title screen and into the main lobby, plug your Ethernet cable back in (or switch back to home Wi-Fi).
The game should seamlessly switch to the stronger connection without kicking you out.
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2. In-Game Network Diagnostics
If you can reach the title screen but get the error when clicking “Enter Game”:
Look for the Tools/Settings icon in the top-right corner of the login screen.
Select Network Diagnostics.
Let it run (it takes about 1 minute).
Once finished, try logging in again immediately.
3. Flush DNS (PC Only)
If the issue is a “stale” routing table on your PC:
Press Windows Key + R, type
cmd, and press Enter.Type the following commands one by one, pressing Enter after each:
ipconfig /flushdnsipconfig /releaseipconfig /renew
Restart your PC and try again.
4. ISP & IPv6 Conflict
The Issue: Some ISPs (common with providers like Jio or Airtel Xstream in India) struggle with the specific UDP ports Marvel Rivals uses.
The Fix: If you have access to your router settings, try disabling IPv6 temporarily and forcing the connection to IPv4.
Current Server Status
Before spending hours troubleshooting, check if the servers are actually down.
Official Status: Check the Marvel Rivals Discord (search the “Announcements” channel).
Maintenance: Since it is a Thursday (Feb 12), check if there is a scheduled “hotfix” maintenance for the recent mid-season patch.
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