.jpg vs .jfif extension

Hello,

I'm your Independent Advisor for today. Let's work together and arrive at a solution.

Did the steps outlined in the link above fix the problem? I found a similar website tackling the same issue:

https://www.cnet.com/forums/discussions/jpeg-to...

Usually, changes to the registry can cause this, especially if the computer recently installed Windows Updates. Performing a system restore can revert these changes.

Hope this helps.

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Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.

Yes editing the registry does fix this temporarily until the next windows update I suppose.

The bigger question is the root cause - "why is it getting changed after an update and how can it be permanently fixed"?

I am guessing this is more a question to Microsoft code writers. I shouldn't be required to edit the register to change a file extension with any update of windows nor should I have to restore windows to some past point....

To the best of my knowledge, this issue started with 1909 release of windows installed in Dec-19

These are being saved from a web page and Microsoft edge browser.

However saving the file is not what is changing the registry setting. The following setting is what is being changed after an update to windows

Computer\HKEY_CLASSES_ROOT\MIME\Database\Content Type\image/jpeg

A search of the registry finds several .jfif entries but setting the one referenced above allows the image to be saved with the .jpg extension as it did in the past.

I did a bit of testing and it does indeed save JPG as JFIF files. These JFIF files open in GIMP, Photos and Photoshop without problems though. Do you use apps which cannot open JFIFs?

I agree when you said Microsoft is up to something with this change, and we should wait and see if they have something big in store for us.

Hi maxwelwp

Is it the extension value on that key which is being changed?

If so, if you right click that key in the left hand window are you able to choose permissions and just set yourself to have full read/write permissions on that key?

Yes - I do see the permissions and I do have full permissions.

Found the following article also....

https://www.techsupportalert.com/content/how-stop-windows-10-saving-jpgs-jfifs.htm

However, still does not explain why or how this get changed and how to prevent it from occurring in the future. This particular computer (HP Envy DV6) has never had the issue in several years until the last few months and appears to change the extension after a windows update.

Hi maxwelwp

Where are you saving those image files from, is that from a web page and if so what web browser are you using, or is that another application on your PC?