I am using .NET Framework 4.5.2. I have generated enterprise wsdl as per given instructions

Use TLS 1.0, 1.1, 1.2 is already checked from Internet options -> Advanced
Also, I am not getting any option in critical update section for Require TLS 1.1 or higher for HTTPS connections

but still I am getting following error:
UNSUPPORTED_CLIENT: TLS 1.0 has been disabled in this organization. Please use TLS 1.1 or higher when connecting to Salesforce using https.

I have an urgent requirement. Please answer asap.

I am using .NET Framework 4.5.2. I have generated enterprise wsdl as per given instructions

Use TLS 1.0, 1.1, 1.2 is already checked from Internet options -> Advanced
Also, I am not getting any option in critical update section for Require TLS 1.1 or higher for HTTPS connections

but still I am getting following error:
UNSUPPORTED_CLIENT: TLS 1.0 has been disabled in this organization. Please use TLS 1.1 or higher when connecting to Salesforce using https.

I have an urgent requirement. Please answer asap.

Facing problem "TLS 1.0 has been disabled in this organization. Please use TLS 1.1 or higher when connecting to Salesforce using https.","errorCode":"UNSUPPORTED_CLIENT"

How can i resolve this issue kindly help me