Error message:
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:sf="urn:fault.enterprise.soap.sforce.com" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<soapenv:Body>
<soapenv:Fault>
<faultcode>sf:UNSUPPORTED_CLIENT</faultcode>
<faultstring>UNSUPPORTED_CLIENT: TLS 1.0 has been disabled in this organization. Please use TLS 1.1 or higher when connecting to Salesforce using https.</faultstring>
<detail>
<sf:UnexpectedErrorFault xsi:type="sf:UnexpectedErrorFault">
<sf:exceptionCode>UNSUPPORTED_CLIENT</sf:exceptionCode>
<sf:exceptionMessage>TLS 1.0 has been disabled in this organization. Please use TLS 1.1 or higher when connecting to Salesforce using https.</sf:exceptionMessage>
</sf:UnexpectedErrorFault>
</detail>
</soapenv:Fault>
</soapenv:Body>
</soapenv:Envelope>
But, Critical Updates are not showing the option for "Require TLS 1.1 or higher for HTTPS connections". How can I enable this option in my organization?