"It Looks Like We Don't Support This File Format" — How to Fix It

You double-click a photo, Windows Photos opens, and instead of your picture you get a grey panel reading “It looks like we don’t support this file format.” The natural assumption is that the file is corrupt. It almost never is. That message is Photos admitting it lacks the decoder for the format, which is a completely different problem — and a much easier one, because the photo itself is perfectly intact.

What the error actually means

Windows Photos can only display formats it has a codec for. A codec is the piece of software that turns compressed image data back into pixels. When Photos meets a file whose codec isn’t installed, it has no way to tell the difference between “format I don’t know” and “file I can’t read,” so it shows one generic message for both.

This is why the error is so often misdiagnosed. People re-download the photo, ask the sender to resend it, or run file-repair tools — none of which help, because nothing is wrong with the file. The gap is on the Windows side.

Why it’s almost always a HEIC file

Check the file extension. If it ends in .heic or .heif, you’ve found your answer. Since iOS 11, iPhones have shot photos in HEIC by default rather than JPG, and HEIC is the single most common trigger for this error on Windows.

The reason HEIC is awkward comes down to a distinction that matters here: HEIC is a container, and the image inside it is compressed with HEVC (also known as H.265). HEVC is patent-encumbered video technology, which is why Microsoft doesn’t ship support for it in every Windows installation the way it does for JPG and PNG. Windows can see the container but can’t decode what’s inside it.

If the extension is something else, these also commonly produce the same message:

• .avif — a newer, very efficient format. Support arrived in recent Windows builds, so older or un-updated systems reject it.
• .webp — generally fine on Windows 11, but inconsistent on older Windows 10 installs.
• Camera RAW files (.cr2, .cr3, .nef, .arw, .dng) — these need the Raw Image Extension, and support varies by camera model.
• Unusual TIFF variants — the .tif extension covers a surprisingly wide range of encodings, and Photos handles only some of them.

Fix it now: convert the file

The fastest fix is to turn the photo into a format Windows has always understood. No installation, no Microsoft Store account, no administrator rights — which matters if this is a work computer where you can’t install software. Drop the file below and you’ll get a JPG you can open, edit, and send anywhere.

You can drop a whole folder of photos in at once and download them as a ZIP. If you want a lossless copy for editing or archiving rather than a compressed JPG, the HEIC to PNG converter does the same job in PNG instead.

Fix it permanently: install the codecs

If you’d rather make Windows handle these files natively, you need two separate items from the Microsoft Store:

1. HEIF Image Extensions — free. This handles the container.
2. HEVC Video Extensions — this handles the actual image data, and it’s the one that trips people up. Microsoft lists a paid version (it has typically been around $0.99) alongside a free HEVC Video Extensions from Device Manufacturer edition that only installs on hardware whose maker licensed the codec. Which one you can install depends on your PC, so check the Store listing on your own machine rather than assuming.

Install both, then restart Photos. Be aware of a genuine, well-documented catch: plenty of people install both extensions and still get the same error. It’s a recurring complaint on Microsoft’s own support forums, usually tied to a specific HEVC extension version or to 10-bit HEIC files from newer iPhones. If that happens to you, you haven’t done anything wrong — the codec route simply doesn’t always work, which is the honest case for converting instead.

Stop it happening to future photos

If the files are coming from your own iPhone, change what it shoots. Open Settings → Camera → Formats and choose Most Compatible. From then on your iPhone records JPG instead of HEIC, and these errors stop at the source. You lose a little storage efficiency — HEIC genuinely is smaller at the same quality — but you gain photos that open everywhere without a thought.

Worth knowing: this setting only affects new photos. Everything already in your library stays HEIC, so you’ll still want to convert the existing ones. There’s more detail in our guide on turning off HEIC on iPhone.

When the file really is damaged

Occasionally the pessimistic reading is the right one. Suspect genuine corruption if:

• The file is a .jpg or .png — formats Windows has supported for decades. A codec gap is not a plausible explanation there.
• The file size is 0 KB, or implausibly small for a photo.
• It fails in every application, including a web browser. Drag it into a Chrome or Edge tab — browsers carry their own decoders and will often open a file Photos won’t.
• It was interrupted mid-transfer, recovered from a failing drive, or pulled out of a damaged archive.

That browser test is the quickest way to separate the two cases. If the photo displays in a browser tab, the data is fine and you have a codec problem. If it fails everywhere, the file itself is the issue, and no converter can rebuild data that isn’t there.

Frequently asked questions

Does converting lose quality?

Converting to JPG re-compresses the image, so there is some loss, though at normal quality settings it’s not visible on a photo. If you want to avoid it entirely, convert to PNG, which is lossless. PNG files of photographs are considerably larger, which is the trade-off.

Will I lose my photo’s date or location?

Our converter strips metadata by default, including EXIF date and GPS coordinates. That’s deliberate — it’s the safer default when you’re about to share a file. The original file on your disk is never modified, so if you need the metadata, keep the original alongside the converted copy.

Is it safe to upload my photos to a converter?

It’s a fair question, and the answer for most online converters is that your photos really are uploaded to someone else’s server. This one doesn’t work that way: conversion runs in your browser, and no image data is sent anywhere. You can verify that yourself — open your browser’s developer tools, watch the Network tab, and convert a file. We explain what to look for in is it safe to convert HEIC online.

Why does the error mention a format when my file has no extension?

Windows leans heavily on the extension to pick a codec. A file that lost its extension in transit gives Photos nothing to work with. Try renaming it to add .heic or .jpg based on where it came from — if you guess right, it opens.

Can I open HEIC in Windows Photo Viewer instead?

No. The older Photo Viewer predates HEIC entirely and has no path to supporting it. Converting, or using a browser, is the way forward.