Microsoft Ole Db Provider For Sql Server Tls 1.2 [top] May 2026

Set conn = Server.CreateObject("ADODB.Connection") conn.Open "Provider=SQLOLEDB;Data Source=myServer;Initial Catalog=myDB;Integrated Security=SSPI;"

Provider=MSOLEDBSQL;Data Source=sqlserver.contoso.com;Initial Catalog=MyDB;Integrated Security=ActiveDirectoryIntegrated; (Use Integrated Security=SSPI if using classic NTLM/Kerberos instead of Azure AD) Append Encrypt=yes; and TrustServerCertificate=no; for production (with proper certificate validation). To strictly require TLS 1.2, you may need to configure Schannel system-wide or set the SSL Crypto context – but MSOLEDBSQL automatically negotiates TLS 1.2 if the server supports it. To disable older protocols system-wide:

Set conn = Server.CreateObject("ADODB.Connection") conn.Open "Provider=MSOLEDBSQL;Data Source=myServer;Initial Catalog=myDB;Integrated Security=SSPI;Use Encryption for Data=True;" Even in .NET, if you are forced to use System.Data.OleDb , change the connection string similarly: microsoft ole db provider for sql server tls 1.2

conn.Open();

6.1 Test Provider Availability Get-ChildItem "HKLM:\SOFTWARE\Classes" -ErrorAction SilentlyContinue | Where-Object $_.PSChildName -like "*MSOLEDBSQL*" 6.2 Capture Network Traffic Use Wireshark or netsh trace to observe TLS handshake: Set conn = Server

Registry keys (reboot required):

[DBNETLIB][ConnectionOpen (SECDoClientHandshake()).]SSL Security error. [Microsoft OLE DB Provider for SQL Server] Cannot generate SSPI context. The only Microsoft-supported OLE DB provider that fully supports TLS 1.2 (and TLS 1.3 where applicable) is MSOLEDBSQL (Microsoft OLE DB Driver for SQL Server). [Microsoft OLE DB Provider for SQL Server] Cannot

using (OleDbConnection conn = new OleDbConnection( "Provider=MSOLEDBSQL;Data Source=myServer;Initial Catalog=myDB;Integrated Security=SSPI;"))