Code |
Reason |
Explanation |
0 |
Reserved |
Normal working operation |
1 |
Unspecific Reason |
We don’t know what’s wrong |
2 |
Previous authentication no longer valid |
Client has associated but is not authorised. |
3 |
Deauthenticated because sending STA is leaving (or has left) IBSS or ESS |
The access point went offline, deauthenticating the client. |
4 |
Disassociated due to inactivity |
Client session timeout exceeded. |
5 |
Disassociated because AP is unable to handle all currently associated STAs |
The access point is busy, performing load balancing, for example. |
6 |
Class 2 frame received from nonauthenticated STA |
Client attempted to transfer data before it was authenticated. |
7 |
Class 3 frame received from nonassociated STA |
Client attempted to transfer data before it was associated. |
8 |
Disassociated because sending STA is leaving (or has left) BSS |
Operating System moved the client to another access point using non-aggressive load balancing. |
9 |
STA requesting (re)association is not authenticated with responding STA |
Client not authorized yet, still attempting to associate with an access point. |
10 |
Disassociated because the information in the Power Capability element is unacceptable |
|
11 |
Disassociated because the information in the Supported Channels element is unacceptable |
|
12 |
Reserved |
Not Used or Special Purpose |
13 |
Invalid information element. |
|
14 |
Message integrity code (MIC) failure |
|
15 |
4-Way Handshake timeout |
|
16 |
Group Key Handshake timeout |
|
17 |
Information element in 4-Way Handshake different from (Re)Association Request/Probe |
|
18 |
Invalid group cipher |
*NEW* |
19 |
Invalid pairwise cipher |
|
20 |
Invalid AKMP |
|
21 |
Unsupported RSN information element version |
|
22 |
Invalid RSN information element capabilities |
|
23 |
IEEE 802.1X authentication failed |
|
24 |
Cipher suite rejected because of the security policy |
|
25-31 |
Reserved |
Not Used or Special Purpose |
32 |
Disassociated for unspecified, QoS-related reason |
Quality of Service has denied the action. |
33 |
Disassociated because QoS AP lacks sufficient bandwidth for this QoS STA |
|
34 |
Disassociated because excessive number of frames need
to be acknowledged, but are not |
|
35 |
Disassociated because STA is transmitting outside the limits of its TXOPs |
|
36 |
Requested from peer STA as the STA is leaving the BSS (or resetting) |
|
37 |
Requested from peer STA as it does not want to use the mechanism |
|
38 |
Requested from peer STA as the STA received frames
using the mechanism for which a |
|
39 |
Requested from peer STA due to timeout |
|
45 |
Peer STA does not support the requested cipher suite |
|
45-65 |
Reserved |
Not Used or Special Purpose |
99 |
|
Typically “No Reason Code” / Unknown State |
535 |
Reserved |
Not Used or Special Purpose |
The first few reason codes where helpful while debugging my wifi related issues.