Support for connections to HMRC online services

01 September 2015

HMRC’s Software Developers Support Team (SDST) has issued the following message:

To protect the security of our customers we are withdrawing support for SSLv3 connections to all HMRC online services from the 30 September 2015. Only submissions using TLS 1.0 or above will be accepted. Any not using the TLS protocol will fail to connect.

As Software Developers you must update your products to support the TLS1.0 protocol or above and you are strongly encouraged to include support for TLS 1.1 and 1.2.

Customers are being informed of this change, and in addition HMRC is advising users of commercial software to contact their supplier if they are unsure whether the products they use allow for the use of the TLS protocol.