Microsoft is warning those who use Windows computers to stop using the Google Chrome browser as soon as possible.
The company says users should be now switching to Edge instead.
Launched in 2015, Edge is Microsoft's own browser, which it hopes will challenge the dominant Google Chrome on Windows 10 and the recently released Windows 11.
And in the never-ending game of corporate one-upmanship, Microsoft has started sending alerts to users when they visit the Download Google Chrome website to install the browser.
One of them insists: "Microsoft Edge runs on the same technology as Chrome, with the added trust of Microsoft."