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TheGift73's avatar
TheGift73
Iron Contributor
Dec 13, 2023

Downloads Failing on Chrome, Edge, Firefox and via Defender portals

Hi,

 

We are seeing multiple users complaining about not being able to be able to download excel files, PNG images or pretty much any file via the browser?

This wasn't an issue first thing this morning for us (UK Based) but started at approx 15:00hrs for us.

Have also seen this Reddit Thread on the subject, so I can see this is not limited to just our company.

This is effecting all browsers as well as when I try to export anything via the Defender portal or exporting the results from a KQL query in Sentinel.

Does anyone know of any known issues that may have caused this?

 

[Update]

Running Update-MpSignature in Powershell (or just check for updates and should grab this for you) resolved this. Looks like a rogue signature was causing the issue. Security Intelligence Version 1.403.445.0 resolves the issues.

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