On the covered Nintendo Switch console, 2121-2509 means an error that comes up when you try to send a friend request to another user. First, wait a while, and then send a friend request to the user again. Then: if the code keeps appearing after that, follow Nintendo's article for this code.
Differential
Likely causes of “Nintendo Switch console code 2121-2509”, and how to tell them apart
- 1
A temporary condition when sending a request
What separates it The friend request does not go through
How to confirm Wait a while, then send it again
- 2
A request sent repeatedly
What separates it Multiple attempts fail
How to confirm Pause before retrying
- 3
The other user's privacy settings
What separates it The request is blocked
How to confirm Ask them to check their settings
- 4
A mistyped friend code
What separates it The request goes nowhere
How to confirm Check the code with the user
Before you touch a setting
Record this first — changing settings destroys the evidence
- The user you tried to add
- The friend code used
Try in this order
0 of 4 completedWhat to do first
ReversibleWait a while, and then send a friend request to the user again.
Correct only the documented fault domain
ReversibleIf the code keeps appearing after that, follow Nintendo's article for this code.
Wait a while
ReversibleAs Nintendo says.
Check the friend code
ReversibleWith the other user.
Model-specific
What is true of this model and not of its siblings
- Nintendo's advice
- Wait, then send again.
- Different from the add error
- This one is about sending to a user.
- Sending versus adding
- This code appears when you send a request to another user, as opposed to adding a friend from your own list, and Nintendo's advice is to wait a while and try again, which suggests a short-lived condition. Repeated attempts in quick succession may keep triggering it, so pause before sending again.
- Checking the other side
- Ask the other person to look at their friend settings and whether their friend list is full. A person who has reached the limit of friends cannot accept more requests, and the failure can look like this error to the sender.
- Alternatives
- Have them send you a request, or exchange friend codes. If the problem repeats for many users over several days, Nintendo Support can check your account.
- The other user's limits
- Friend lists have a size limit. A friend with a full list cannot accept you, and the request fails on your side with an error. Ask them to remove someone.
- Timing
- Sending many requests at once can trigger a short block. Send one at a time and wait.
- A quick test
- Try sending a request to someone else. If it works, the first person's account or list is the cause. If every request fails, wait longer, since the service may be limiting requests.
Stop boundary
When this stops being a self-service repair
- !Ask the other user to add you
- !If the error persists after waiting, contact Nintendo Support
Evidence ledger
Sources behind this answer
Exact questions
Common questions
What does 2121-2509 mean on a Nintendo Switch console?+
an error that comes up when you try to send a friend request to another user.
Is it permanent?+
No, normally it clears.