Microsoft recently rolled out a bunch of cumulative updates to the Windows users as part of Patch Tuesday update rollout. However, the latest updates seem to break a bunch of gov.uk websites for UK users. The irony here is that the latest updates were supposed to introduce improvements to the gov.uk website experience for UK users.
The issue currently affects Microsoft Edge and Internet Explorer and the websites work just fine on other browsers.
After installing the May 14, 2019 update, some gov.uk websites that don’t support HTTP Strict Transport Security (HSTS) may not be accessible through Internet Explorer 11 or Microsoft Edge.
Following are the cumulative updates that are breaking websites on Microsoft Edge.
- Windows 10 version 1809: May 14, 2019—KB4494441 (OS Build 17763.503)
- Windows 10 version 1803: May 14, 2019—KB4499167 (OS Build 17134.765)
- Windows 10 version 1709: May 14, 2019—KB4499179 (OS Build 16299.1146)
- Windows 10 version 1703: May 14, 2019—KB4499181 (OS Build 15063.1805)
- Windows 10 version 1607: May 14, 2019—KB4494440 (OS Build 14393.2969)
- Windows 10 original version: May 14, 2019—KB4499154 (OS Build 10240.18215)
Microsoft has acknowledged the issue and is working on a potential fix. At this moment, there is no ETA available but Microsoft says it wants to roll it out “as quickly as possible.” In the meantime, affected users can either uninstall the cumulative updates altogether or just switch to a different browser temporarily.