Updated: Information regarding service slow response times has been amended.
21 December 2016 – Slow response times
We are aware that you may be experiencing delays in receiving responses to submissions made using HMRC Online Returns and Forms or commercial software.
Please do not attempt to resubmit your submission.
This is under urgent investigation and we apologise for any inconvenience this may cause.
Government Gateway SSLv3 disabled 10 October 2016
On 30 September 2015, HMRC made a change so that if you were using the SSLv3 protocol to connect to our services you were no longer able to. For the majority of online customers this meant no change as they were already using a more secure protocol (such as TLS1.0, TLS1.1 or TLS1.2) by default.
Government Gateway will be disabling SSLv3 on a permanent basis on 10 October 2016.
If you’re uncertain about the type of secure connection your browser or other software can support, you can check it at Your SSL client is Bad and other similar services.
If you’re still using the SSLv3 protocol it is advised that you use a more secure protocol to connect to Government Gateway.
Source: HMRC