R
2-0x0000d00a
Easy Fix
Rainbow Six Siege · Gaming
Siege could not complete online session handshake.
Quick Answer
Error code 2-0x0000D00A on your Rainbow Six Siege Gaming means: Siege could not complete online session handshake.. This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
R6-PC-STEAMR6-PC-UBIR6-PSR6-XBOX
Likely Causes
  1. Auth token mismatch
  2. Backend timeout
  3. Network filtering
  4. Session cache corruption
How to Fix It
1
Sign out/in Ubisoft account.
2
Restart game client.
3
Clear local cache.
4
Retry after short wait.
5
Test alternate network if persistent.
Pro Tip
This is a common issue that most users can resolve without specialized tools. Try the first step before moving on to more complex solutions.
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