IEEE 802.11 De-Authentication/Association Codes and Clauses WLAN APs and Controllers icon

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De-authentication Reason Codes

Reason code Meaning
1 Unspecified reason
2 Previous authentication no longer valid
3 De-authenticated because sending station is leaving (or has left) independent basic service set (IBSS) or extended service set (ESS)
4 Disassociated due to inactivity
5 Disassociated because access point (AP) unable to handle all currently associated stations
6 Class 2 frame received from non-authenticated station
7 Class 3 frame received from non-associated station
8 Disassociated because sending station is leaving (or has left) basic service set (BSS)
9 Station requesting association or re-association not authenticated with responding station
10 Disassociated because of unacceptable information in the power capability element
11 Disassociated because of unacceptable information in the supported channels element
13 Invalid information (Doesn't follow 802.11 standard)
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 association request, re-association request, probe response, or beacon frame
18 Invalid group cipher
19 Invalid pairwise cipher
20 Invalid authentication and key management protocol (AKMP)
21 Unsupported robust security network (RSN) information element version
22 Invalid RSN information element capabilities
23 IEEE 802.1X authentication failed
24 Cipher suite rejected because of security policy
32 Disassociated for unspecified quality of service (QoS)-related reason
33 Disassociated because QoS AP lacks sufficient bandwidth for this QoS station
34 Disassociated because excessive number of frames need to be acknowledged, but are not acknowledged due to AP transmissions or poor channel conditions, or both
35 Disassociated because station is transmitting outside limits of its transmission opportunities (TXOPs)
36 Requested from peer station as station is leaving or resetting the BSS
37 Requested from peer station as it doesn't want to use the mechanism
38 Requested from peer station as station received frames using the mechanism for which a setup is required
39 Requested from peer station due to timeout
45 Peer station doesn't support requested cipher suite

Association Status Codes

Status code Meaning
0 Successful
1 Unspecified failure
2 Tunneled direct link setup (TDLS) wake-up schedule rejected but alternative schedule provided
3 TDLS wake-up schedule rejected
5 Security disabled
6 Unacceptable lifetime
7 Not in same basic service set (BSS)
10 Can't support all requested capabilities in capability information field
11 Re-association denied due to inability to confirm that association exists
12 Association denied due to reason outside scope of this standard
13 Responding station doesn't support specified authentication algorithm
14 Received authentication frame with authentication transaction sequence number out of expected sequence
15 Authentication rejected because of challenge failure
16 Authentication rejected due to timeout waiting for next frame in sequence
17 Association denied because AP unable to handle additional associated stations
18 Association denied due to requesting station not supporting all data rates in the BSSBasicRateSet parameter, where BSS refers to basic service set
19 Association denied due to requesting station not supporting short preamble option
20 Association denied due to requesting station not supporting packet binary convolutional code (PBCC) modulation option
21 Association denied due to requesting station not supporting channel agility option
22 Association request rejected because spectrum management capability required
23 Association request rejected because of unacceptable information in the power capability element
24 Association request rejected because of unacceptable information in the supported channels element
25 Association denied due to requesting station not supporting short slot time option
26 Association denied due to requesting station not supporting direct sequence spread spectrum orthogonal frequency division multiplexing (DSSS-OFDM) option
27 Association denied because requesting station doesn't support high throughput (HT) features
28 Pairwise master key (PMK-R0) Key Holder (R0KH) unreachable
29 Association denied because requesting station doesn't support phased coexistence operation (PCO) transition time required by the AP
30 Association request rejected temporarily; try again later
31 Robust management frame policy violation
32 Unspecified. Quality of service (QoS)-related failure
33 Association denied because QoS AP has insufficient bandwidth to handle another QoS station
34 Association denied due to excessive frame loss rates or poor conditions on current operating channel, or both
35 Association (with QoS BSS) denied because the requesting station does not support the QoS facility
37 Request declined
38 Request not successful as one or more parameters have invalid values
39 Traffic stream (TS) not created because request can't be honored; however, suggested traffic specification (TSPEC) provided so that the initiating station may attempt to set another TS with suggested changes to TSPEC
40 Invalid information element (doesn't follow 802.11 standard)
41 Invalid group cipher
42 Invalid pairwise cipher
43 Invalid authentication and key management protocol (AKMP)
44 Unsupported robust security network element (RSNE) information element version
45 Invalid RSNE information element capabilities
46 Cipher suite rejected because of security policy
47 TS not created; however, hybrid coordinator (HC) may be capable of creating TS, in response to a request, after the time indicated in TS delay element
48 Direct link not allowed in the BSS by policy
49 Destination station not present within this BSS
50 Destination station not a QoS station
51 Association denied because ListenInterval too large
52 Invalid fast transition (FT) action frame count
53 Invalid pairwise master key identifier (PMKID)
54 Invalid mobility domain element (MDE)
55 Invalid fast transition element (FTE)
56 Requested traffic classification (TCLAS) processing not supported by AP
57 AP has insufficient TCLAS processing resources to satisfy request
58 TS not created because request can't be honored; however, HC suggests station transitions to other BSSs to set up TS
59 Generic advertisement service (GAS) advertisement protocol not supported
60 No outstanding GAS request
61 GAS response not received from advertisement server
62 Station timed out waiting for GAS query response
63 GAS response larger than query response length limit
64 Request refused because home network doesn't support request
65 Advertisement server in network not currently reachable
68 Request refused because AP doesn't support unauthenticated access
73 Unscheduled Automatic Power Save Delivery (U-APSD) coexistence not supported
74 Requested U-APSD coexistence mode not supported
75 Requested interval or duration value can't be supported with U-APSD coexistence
76 Authentication rejected because anti-clogging token is required
77 Authentication rejected because the offered finite cyclic group not supported
78 The Target Beacon Transmission Time (TBTT) adjustment request not successful because station couldn't find alternative TBTT
79 Transmission failure
80 Requested TCLAS not supported
81 TCLAS resources exhausted
82 Rejected with suggested BSS transition
93 Association or re-association refused because of memory limits at AP
94 Association or re-association refused because emergency services not supported at AP
95 GAS query response not yet received
101 Request failed due to exceeded MCCA access fraction (MAF) limit
102 Request failed due to exceeded MCF coordinated channel access (MCCA) track limit, where MCF refers to mesh coordination function

802.11 Clauses

Clause 802.11-2012 802.11-2016
Clause 1 Overview Overview
Clause 2 Normative References Normative References
Clause 3 Definitions Definitions
Clause 4 General Description General Description
Clause 5 MAC Service Definition MAC Service Definition
Clause 6 Layer Management Layer Management
Clause 7 PHY Service Specification DS SAP Specification
Clause 8 Frame Formats PHY Service Specification
Clause 9 MAC Sublayer Functional Description Frame Formats
Clause 10 MLME MAC Sublayer Functional Description
Clause 11 Security MLME
Clause 12 Fast BSS Transition Security
Clause 13 MLME Mesh Procedures Fast BSS Transition
Clause 14 FHSS PHY MLME Mesh Procedures
Clause 15 IR PHY DSSS PHY
Clause 16 DSSS PHY HR/DSSS PHY
Clause 17 HR/DSSS PHY OFDM PHY
Clause 18 OFDM PHY ERP (PHY)
Clause 19 ERP (PHY) HT PHY
Clause 20 HT PHY DMG PHY
Clause 21   VHT PHY
Clause 22   TVHT PHY

 

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