Microsoft has released a temporary software fix for a newly discovered bug in its Internet Explorer web browser.
Microsoft told users to download a free patch, the Enhanced Mitigation Experience Toolkit, as a temporary solution while the company continued to work on a long-term fix.
But experts warned the new software must be downloaded and manually configured, making it cumbersome for many ordinary users.
Some advised users to switch to alternative browsers, such as Google's Chrome or Mozilla's Firefox while the bug was being fixed.
It is expected that producing a proper update will take about a week.