Impossible to install entreprise console 5.5.1

Hello Mic Ita,

unfortunately your condensed depiction with broad terms (cannot manage, same problem, impossible, try a lot of things) doesn't contain enough information to help you. Is this a first-time install (i.e. you haven't used SESC before)?

There are some, err, strange statements and it's not really clear what you did. Starting at the bottom:

I create a new database
unless your database is remote (is it?) all three components are installed during one run of the wizard, i.e. you don't try to install after you've created the database

impossible to connect the database
this also suggests a database on some instance other than the default local SOPHOS instance; it's supposed to work with the automatically installed instance and database

impossible to remove Sophos Mangement Database
not sure whether you are referring to the Sophos Database component (that you remove via Programs and Features) or the SOPHOS551 database and/or SOPHOS instance proper; and a description more specific than impossible would be helpful

I can see the computers but i cannot manage them
this is perhaps the most interesting statement - what is see and what is manage? Assuming a fresh install you don't see any endpoints except your management server. After installation the Download Security Software wizard commences asking you to enter an update location and the necessary credentials. You didn't mention this step. What did you do to see your computers? Before the Endpoint software is installed on a computer the computer is called unmanaged. It might be a misnomer when you say you cannot manage - do you mean that Protect Computers failed?  

Christian

ok, forget I cannot uninstall, now I have a new install but always the same probleme : I can see the computers but i cannot manage them

I think its the same probleme than : https://community.sophos.com/products/endpoint-security-control/f/sophos-enterprise-console/101101/cause-with-protecting-clients-in-sec

With error 00002E 

With more than 16000 view I think that a lot of peoples have this probleme but at the end there is no solution.

You say : check the Router log in %ProgramData%\Sophos\Remote Management System\3\Router\Logs\. This should tell why the endpoint can't communicate with the server.

So I find that :

I Sent message (id=018D3B62) to EM
03.09.2018 15:48:49 0880 E ACE_SSL (668|2176) error code: 336027900 - error:140760FC:SSL routines:SSL23_GET_CLIENT_HELLO:unknown protocol
03.09.2018 15:48:49 0880 E ACE_SSL (668|2176) error code: 336462231 - error:140E0197:SSL routines:SSL_shutdown:shutdown while in init
03.09.2018 15:54:39 0888 E ACE_SSL (668|2184) error code: 336027900 - error:140760FC:SSL routines:SSL23_GET_CLIENT_HELLO:unknown protocol
03.09.2018 15:54:39 0888 E ACE_SSL (668|2184) error code: 336462231 - error:140E0197:SSL routines:SSL_shutdown:shutdown while in init
03.09.2018 15:55:24 08D0 I Routing to EM: id=018D3D4C, origin=Router$SERVER2008R2.Agent, dest=EM, type=EM-GetStatus-Reply
03.09.2018 15:55:24 08BC I Sent message (id=018D3D4C) to EM

Must I disable all protocol exept tls 1.2 ?

on the server?

on the client ?

Protocols enable now :

Multi-protocol unified Hello

SSL 3.0

TlS1.0

TLS1.1

TLS1.2

Protocols enable now :

Multi-protocol unified Hello

SSL 3.0

TlS1.0

TLS1.1

TLS1.2