MTD RTI issues on 2012

HI Do we have any documentation from HMRC regarding Server 2012 and TLS 1.0 and 1.1 we can give to customers f

Another client reported it this morning submitting RTI and getting message internet connection has occurred click ok to resolve

Clients internet is fine and they are using win server 2012 r2 and they would like to see an info from HMRC regarding the closure of TLS1.0

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claire-craig

Hi,

I don't think you'll get a specific document from HMRC on this, their website does advise of the supported TLS version

Reference guide - HMRC Developer Hub - GOV.UK

and I think it is more about the Windows Server 2012 being out of support which I would think would be the better avenue to go down with your customer.

I am sure there are others on here that might be able to word this better as I get all confused with the technical jargon :-)

Regards
Claire

andrew-warden

Thanks Claire We are discussing arranging a new server they just wanted something from HMRC

ric

The change was that they dropped support for some cipher suites, specifically CBC.

This is from an email I got from their Software Developer Support Team:

Following on from our previous communications, we have now completed the update to our live (production) environments, removing support for a number of cipher suites known to be more vulnerable to attack. This was slightly delayed from the intended roll out and the change took place on 9 May 2024.

To ensure that this security change has not impacted your application, we strongly recommend that you test your applications against the relevant services to ensure that your connectivity is not affected. The following live environments no longer accept CBC ciphers:

Transaction Engine Live Service:
https://transaction-engine.tax.service.gov.uk/submission

API Platform Live Service:
https://api.service.hmrc.gov.uk

If you can continue to test successfully, you don’t need to take any further action.

0911060553270289.pdf

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