man > openssl-errstr(1)

OPENSSL-ERRSTR(1SSL)                           OpenSSL                          OPENSSL-ERRSTR(1SSL)

NAME
       openssl-errstr - lookup error codes

SYNOPSIS
       openssl errstr [-help] error_code...

DESCRIPTION
       Sometimes an application will not load error message texts and only numerical forms will be
       available. This command can be used to display the meaning of the hex code. The hex code is
       the hex digits after the second colon.

OPTIONS
       -help
           Display a usage message.

EXAMPLES
       The error code:

        27594:error:2006D080:lib(32)::reason(128)::107:

       can be displayed with:

        openssl errstr 2006D080

       to produce the error message:

        error:2006D080:BIO routines::no such file

COPYRIGHT
       Copyright 2004-2020 The OpenSSL Project Authors. All Rights Reserved.

       Licensed  under  the Apache License 2.0 (the "License").  You may not use this file except in
       compliance with the License.  You can obtain a  copy  in  the  file  LICENSE  in  the  source
       distribution or at <https://www.openssl.org/source/license.html>.

3.0.13                                       2026-07-29                         OPENSSL-ERRSTR(1SSL)