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In Windows 10, the value of Computer\HKEY_CLASSES_ROOT\MIME\Database\Content Type\image/jpeg/Extension is changing from JPG to JFIF at frequent intervals

This value is changed roughly every 2 to 3 days, seemingly without any user action taken to change this value.

Every time this value is changed, programs no longer save JPG files with the extension .JPG; they are saved as .JFIF.

This breaks basically every script and program written in the last 30 years.

What is causing this change, and how can it be prevented?

sgfit
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  • Alright, it's the Google Chrome update process altering the value of this key every time it updates.

    The rest of the question, "how can it be prevented," remains.

     – sgfit Jul 22 '22 at 13:04
  • https://superuser.com/questions/1271755/prevent-a-change-to-one-or-more-windows-10-registry-keys – Gantendo Jul 22 '22 at 14:53

1 Answers1

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Windows doesn't do that so there are probably some malicious actors on your PC

To check you need to enable auditing and listen to registry modification event 4657 to know who does that. See How to monitor Registry changes for more information

phuclv
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