Our teams have continued work with Microsoft's product group to investigate this issue. As mentioned in yesterday's update this is now confirmed as expected behavior, resulting from a recent security update to how Microsoft Defender SmartScreen functions in Internet Explorer mode.
The temporary workaround of saving files to your computer before opening them remains a viable option. However, for a permanent resolution, Microsoft has recommended a configuration change which we are now testing internally. Once this testing is completed early next week we will issue guidance via the Market Communications process and via a link on a final update to this status page.
As a reminder: The workaround for affected customers is to 'Save' the document being downloaded, instead of opening it directly. Customers can then open the file from their Downloads area on their computer without issue.
A further update will be issued no later than 17:00 on Tuesday (30th September).
DXC apologises for the inconvenience and the impact being caused to our customer's operations.
Posted Sep 26, 2025 - 17:27 BST
Update
Microsoft have identified the issue and confirmed this is expected behavior following the security update, we are meeting again tomorrow to discuss the options to resolution.
As a reminder: Whilst we seek a solution from Microsoft, the workaround for affected customers is to 'Save' the document being downloaded, instead of opening it directly. Customers can then open the file from their Downloads area on their computer without issue.
A further update will be issued no later than 17:00 tomorrow.
DXC apologises for the inconvenience and the impact being caused to our customer's operations.
Posted Sep 25, 2025 - 18:25 BST
Update
Microsoft are still working on a solution for this issue and we are meeting with them again tomorrow for a further update.
As a reminder: Whilst we seek a solution from Microsoft, the workaround for affected customers is to 'Save' the document being downloaded, instead of opening it directly. Customers can then open the file from their Downloads area on their computer without issue.
A further update will be issued no later than 17:00 tomorrow.
DXC apologises for the inconvenience and the impact being caused to our customer's operations.
Posted Sep 24, 2025 - 16:21 BST
Update
We have been working with Microsoft again today to help them collect more diagnostics information, and they are due to come back to us sometime tomorrow with the findings and recommendations.
As a reminder: Whilst we seek a solution from Microsoft, the workaround for affected customers is to 'Save' the document being downloaded, instead of opening it directly. Customers can then open the file from their Downloads area on their computer without issue.
A further update will be issued no later than 17:00 tomorrow.
DXC apologises for the inconvenience and the impact being caused to our customer's operations.
Posted Sep 23, 2025 - 14:26 BST
Update
Microsoft have confirmed the issue has been reported by other customers, and we are actively chasing them to confirm the next steps and a fix for this issue.
As a reminder: Whilst we seek a solution from Microsoft, the workaround for affected customers is to 'Save' the document being downloaded, instead of opening it directly. Customers can then open the file from their Downloads area on their computer without issue.
A further update will be issued no later than 12:00 tomorrow.
DXC apologises for the inconvenience and the impact being caused to our customer's operations.
Posted Sep 22, 2025 - 11:19 BST
Update
Our DXC technical team are continuing investigation into this issue with Microsoft, they have collected diagnostics and we are now waiting for them to confirm the next steps and hoping for a fix or further security update to be released.
As a reminder: Whilst we seek a solution from Microsoft, the workaround for affected customers is to 'Save' the document being downloaded, instead of opening it directly. Customers can then open the file from their Downloads area on their computer without issue.
A further update will be issued no later than 12:00 tomorrow.
DXC apologises for the inconvenience and the impact being caused to our customer's operations.
Posted Sep 18, 2025 - 11:42 BST
Identified
DXC has been made aware this morning of a small number of customers having issues downloading files, via Microsoft Edge, from either IMR or KnowledgeBase. We have traced this to a specific Microsoft security update that has been downloaded to customers' Window 11 machines, which was released in the last few days.
For the information of customers' technical teams, the Microsoft update is known as "2025-09 Cumulative Update for Windows 11 Version 24H2 for x64-based Systems (KB5065426) (26100.6584)".
Whilst we seek a solution from Microsoft, the workaround for affected customers is to 'Save' the document being downloaded, instead of opening it directly. Customers can then open the file from their Downloads area on their computer without issue.
A further update will be issued no later than 12:00 tomorrow.
DXC apologises for the inconvenience and the impact being caused to our customer's operations.