If you mean ascent character in field names, then it is not supported.
If you mean ascents in field data, then we have tested it with mssqlnative driver.

You can try mssqlnative OR pdo.

$db_conf = array();
$db_conf["type"] = "mssqlnative"; // or mssql
$db_conf["server"] = "(local)sqlexpress"; // ip:port
$db_conf["user"] = null;
$db_conf["password"] = null;
$db_conf["database"] = "master";

OR

$db_conf = array();
$db_conf["type"] = "pdo";
$db_conf["server"] = "sqlsrv:Server=(local)sqlexpress";
$db_conf["user"] = null; // username
$db_conf["password"] = null; // password
$db_conf["database"] = "master"; // database

Thank you

I dont have accent in my field name, only in field data

I use this parameter :

define("PHPGRID_DBTYPE","odbc_mssql");
define("PHPGRID_DBHOST","Driver={SQL Server};Server=sql-info2.csbf.localsqlinfo2008r2;Database=SupportInfo;CharacterSet=utf-8");
define("PHPGRID_DBUSER","support");
define("PHPGRID_DBPASS","xxxxxxxxxx");
define("PHPGRID_DBNAME","SupportInfo");

if i use this table no problem

2 CORE 2 DUO – T5500 / 1.66 GHZ 901
9 CORE 2 DUO – E8400 @ 3.00GHZ 2044
17 CORE 2 E7400 2.80GHZ 1864
18 CORE I5 CPU M520@ 204 GHZ 2387
20 CORE 2 T6500 2100 MHZ 1457
21 DUAL CORE T4200 2.0G 800MHZ 1222
22 CORE 2 DUO – E7500 @ 2.93GHZ 1979
23 SEMPRON 3100+ 158

But if I add an accent “é” I obtain an ERROR

2 éééééCORE 2 DUO – T5500 / 1.66 GHZ 901
9 CORE 2 DUO – E8400 @ 3.00GHZ 2044
17 CORE 2 E7400 2.80GHZ 1864
18 CORE I5 CPU M520@ 204 GHZ 2387
20 CORE 2 T6500 2100 MHZ 1457
21 DUAL CORE T4200 2.0G 800MHZ 1222
22 CORE 2 DUO – E7500 @ 2.93GHZ 1979
23 SEMPRON 3100+ 158

I have try

define("PHPGRID_DBTYPE","mssqlnative"); // mysql,oci8(for oracle),mssql,postgres,sybase
define("PHPGRID_DBHOST","sql-info2.csbf.localsqlinfo2008r2");
define("PHPGRID_DBUSER","support");
define("PHPGRID_DBPASS","xxxxxxxx");
define("PHPGRID_DBNAME","SupportInfo");

I obtains this message : Couldn't execute query. SQLState: IMSSP Error Code: -14 Message: An invalid parameter was passed to sqlsrv_query. – select top (1+0) * FROM Puissance WHERE 1=1

Thank you for helping

Jean-Yves

Refer this thread: https://phpgrid.desk.com/customer/portal/questions/824635-error-connecting-to-sql-server-2-8