HEIC files on Windows: why they won't open, and how to fix it

Why Windows treats your photo like a mystery file

HEIC is not a Windows-native format. It was built by Apple around the HEVC video codec, and Windows has no built-in decoder for either the container or the compression it uses. Without that decoder, File Explorer can't generate a thumbnail, Photos can't open the file, and double-clicking it typically shows "This file isn't supported" or a similar error rather than your picture. (See why Apple moved to HEIC in the first place, if you're curious what problem it was actually solving.)

This isn't a Windows 11-specific problem, and it isn't new — it's been true since Windows 10, because the missing piece is a HEVC decoder, not a general update.

Fix 1: install the Microsoft Store codec extensions

Microsoft sells the missing decoder as an add-on rather than bundling it, largely for licensing-cost reasons around HEVC patents. There are two separate listings, and which ones you actually need is more confusing than it should be:

• HEIF Image Extensions — free, from Microsoft, in the Microsoft Store. This handles the HEIC/HEIF container format itself.
• HEVC Video Extensions — the video decoder HEIC still images are built on top of. Microsoft's own support documentation states you need both extensions to view HEIC photos, even though you're not opening a video. This one has historically carried a small charge (roughly $0.99), though some PCs come with a manufacturer-bundled equivalent listed as "HEVC Video Extensions from Device Manufacturer," which is free — search for that name first before paying for the paid listing.

To install: open the Microsoft Store, search "HEIF Image Extensions," install the listing published by Microsoft Corporation, then search "HEVC Video Extensions from Device Manufacturer" and install that if it's available to you before resorting to the paid "HEVC Video Extensions" listing. Restart File Explorer (or just sign out and back in) afterward — thumbnails are known to not refresh immediately even once the extension is installed.

What this buys you: HEIC thumbnails in File Explorer, and the ability to open HEIC files in the Photos app. It does not make other software — older Photoshop versions, most upload forms, many business systems — suddenly accept HEIC. The file is still HEIC; you've just taught Windows itself to display it.

Fix 2: convert to JPG and skip the codec entirely

If you don't need to keep working in HEIC — you just want a JPG you can use anywhere — converting is faster than hunting through two Store listings and troubleshooting thumbnail caches. The tool on this page runs entirely in your browser: no install, no Microsoft Store, no restart. Drop your HEIC files above and you'll have JPGs in a few seconds, with the capture date and camera info carried across rather than stripped out.

This is also the more durable fix if you regularly receive HEIC files from other people's iPhones — installing a codec fixes viewing on this PC, but the next Windows machine you sit down at has the same problem again.

A gotcha specific to Windows: OneDrive and photo sync

If your iPhone photos sync through iCloud or OneDrive rather than a direct USB copy, some sync paths convert HEIC to JPG automatically and some don't, depending on settings on both ends. If some photos from the same batch open fine and others don't, this is usually why — check whether "Automatic" format conversion is enabled in your iPhone's Settings → Photos → Transfer to Mac or PC, though in practice this setting is inconsistently honored.

Related

• HEIC on MacNative support since 2017 — but a few apps still choke on it
• HEIC on AndroidWhich phones handle it natively, and which apps don't
• HEIC to JPG converterThe full technical writeup on metadata and quality