macOS Big Sur Keychain access quit unexpectedly

Same problem here

Same problem :((((

Same problem :-(

Process: Keychain Access [855]
Path: /System/Applications/Utilities/Keychain Access.app/Contents/MacOS/Keychain Access
Identifier: com.apple.keychainaccess
Version: 11.0 (55281.40.7.0.1)
Build Info: KeychainAccess-55281040007000001~164
Code Type: X86-64 (Native)
Parent Process: ??? [1]
Responsible: Keychain Access [855]
User ID: 501

Date/Time: 2020-11-13 16:13:09.783 +0100
OS Version: macOS 11.0.1 (20B29)
Report Version: 12
Anonymous UUID: 6E5D9F33-6EDA-A53B-4BB6-1677B2D34BFE


Time Awake Since Boot: 950 seconds

System Integrity Protection: enabled

Crashed Thread: 0 Dispatch queue: com.apple.main-thread

Exception Type: EXCBADINSTRUCTION (SIGILL)
Exception Codes: 0x0000000000000001, 0x0000000000000000
Exception Note: EXCCORPSENOTIFY

Termination Signal: Illegal instruction: 4
Termination Reason: Namespace SIGNAL, Code 0x4
Terminating Process: exc handler [855]

Application Specific Information:
dyld3 mode

Same problem. MacBook Pro 15 macOS Big Sur

Same problem here.

Code Block 
Process:               Keychain Access [941]
Path:                  /System/Applications/Utilities/Keychain Access.app/Contents/MacOS/Keychain Access
Identifier:            Keychain Access
Version:               11.0 (55281.40.7.0.1)
Build Info:            KeychainAccess-55281040007000001~164
Code Type:             X86-64 (Native)
Parent Process:        ??? [1]
Responsible:           Keychain Access [941]
User ID:               502
Date/Time:             2020-11-15 15:49:56.835 -0300
OS Version:            macOS 11.0.1 (20B29)
Report Version:        12
Bridge OS Version:     3.0 (14Y908)
Anonymous UUID:        8F8AD05D-B28B-7570-E415-2B35FF2D0EEC
Time Awake Since Boot: 180 seconds
System Integrity Protection: enabled
Crashed Thread:        0  Dispatch queue: com.apple.main-thread
Exception Type:        EXC_BAD_INSTRUCTION (SIGILL)
Exception Codes:       0x0000000000000001, 0x0000000000000000
Exception Note:        EXC_CORPSE_NOTIFY
Termination Signal:    Illegal instruction: 4
Termination Reason:    Namespace SIGNAL, Code 0x4
Terminating Process:   exc handler [941]
Application Specific Information:
dyld3 mode

This works for me:

I checked my keychains in terminal with command:
security list-keychains

There were two keychains with invalid path on my computer, "Apple Development" and "Mac Developer" keychains in /private/var/... folder.

I deleted the the two keychains in terminal with command:
security delete-keychain [keychain with invalid path]

Some message was displayed, but keychain was successfully removed.
security: SecKeychainDelete: UNIX[No such file or directory]

Now Keychain access works again.

I hope this helps.

The previous replay worked for me.
Thanks!

It's not work for me :/

Code Block 
➜  ~ security list-keychains
    "/private/var/folders/2q/0ccsr2p11qz6c2wh8qtpm80000gp/T/Apple Development: André Santana (André Santana)~~~6r9ipc/Apple Development: André Santana (André Santana).keychain"
➜  ~ security delete-keychain /private/var/folders/2q/0ccsr2p11qz6c2wh8qtpm80000gp/T/Apple Development: André Santana (André Santana)~~~6r9ipc/Apple Development: André Santana (André Santana).keychain
security: SecKeychainDelete: The specified keychain could not be found.

@sandor-ivicsics's answer solved it for me. Thanks!

@sandor-ivicsics thanks. it worked

@andre.ferreira.ais
your keychain path contains space character
try inserting double quotation mark around your keychain path

try this:
security delete-keychain "/private/var/folders/2q/0ccsr2p11qz6c2wh8qtpm80000gp/T/Apple Development: André Santana (André Santana)~~~6r9ipc/Apple Development: André Santana (André Santana).keychain"

Thanks @sandor-ivicsics, it worked!!!

Thanks, thanks, thanks!!!!! 🙏 🤩

Thank you so much @sandor-ivicsics, this saved my day!

thx!! @sandor-ivicsics, it worked!!!

Thanks a lot!!!!