You got a photo from an iPhone user, double-clicked it, and your computer threw up "Windows can't open this file." Or Photoshop gave you a cryptic "AIDE library error." Or your Android gallery just showed a broken image icon.

If your HEIC files won't open on Windows, Mac, Android, Photoshop, or ChromeOS, the problem is almost always missing HEVC codec support. This guide explains exactly why each platform fails, the fix that actually works for each one, and what to do when nothing else does.

You're not doing anything wrong HEIC is Apple's default photo format, and most non-Apple software still can't decode it without help.

A .heic file is a container (HEIF) holding an image compressed with the HEVC codec the same codec used for H.265 video. HEVC is patent-encumbered, and the licensing fees are exactly why Microsoft, Adobe, Google, and others didn't build the decoder in by default.

So the failure is almost never about the file being broken. The device sees a .heic file, recognizes the extension, but has no way to decode the HEVC data inside. Windows needs two separate add-ons to fix this, older Android versions can't decode it at all, ChromeOS has no decoder, and only Safari 17+ renders HEIC among browsers. The fix depends entirely on your platform.

Depending on your device and software, a HEIC file that won't open shows up differently. These are the symptoms reported most often on Microsoft, Apple, and Adobe support forums:

• "Windows can't open this file" or "It looks like we don't support this file format" (Windows Photos) • A generic or blank icon with no thumbnail preview • "Could not complete your request because an unknown error occurred in the AIDE library" (Photoshop) • "Photoshop Elements cannot recognize the file extension" • "This file type is not supported" (ChromeOS Gallery) • "This item was encoded in a format that's not supported" (HEVC video inside HEIC) • A broken image icon instead of a thumbnail (Android, ChromeOS) • The image opens but displays as black, gray, or garbled pixels

Each of these maps to a specific cause and fix below.

Windows can't open HEIC out of the box and Windows 11 24H2 and 25H2 still don't bundle support. The single most important thing to understand is that you need TWO components, not one:

1. HEIF Image Extensions free, from the Microsoft Store. Adds the HEIC container support to the Windows imaging pipeline. 2. A HEVC decoder this is the part that actually decodes the image. Microsoft charges $0.99 for "HEVC Video Extensions."

Installing only the free HEIF extension is the number one reason people say "I installed the extension and it still won't open." Without the HEVC decoder, the container opens but the pixels can't be read. Once both are installed, Photos, File Explorer thumbnails, and Paint can all render HEIC.

The free workaround for the $0.99 charge: Microsoft still publishes a free "HEVC Video Extensions from Device Manufacturer" build, but removed it from public Store search (it's meant to be pre-installed by PC makers like Dell, HP, and Lenovo). You can install it directly: go to store.rg-adguard.net, paste the Store link for product ID 9n4wgh0z6vhq, and download the signed package. Many brand-name PCs already have it. (This is a gray-area workaround the package itself is Microsoft-signed, but use your own judgment.)

If it worked before and suddenly stopped: a Windows update occasionally breaks the extension. Go to Settings → Apps → HEIF Image Extensions → Advanced options → Reset, or reinstall.

Prefer not to deal with codecs at all? Dedicated viewers like XnView MP, ImageGlass, and CopyTrans HEIC (which adds Explorer thumbnails and a right-click convert option) handle HEIC directly. Or convert the file no install needed.

Good news: macOS has supported HEIC natively since High Sierra (10.13), released in September 2017 the same era HEIC launched. If your Mac runs 10.13 or later (almost certainly does in 2026), HEIC just works:

• Preview double-click any .heic file; it opens and even exports to JPG or PNG via File → Export • Quick Look press Space on the file in Finder for an instant preview • Photos full import, edit, and iCloud sync • Finder thumbnails generated automatically

To check your version: Apple menu → About This Mac. To convert in bulk without any extra tool, open the files in Preview, select them all, then File → Export Selected Images → JPEG.

Only Macs older than High Sierra need a workaround a browser or an online converter.

Android gained native, OS-level HEIC decoding in Android 10 (API 29, released 2019) not Android 9, which several guides get wrong. Android 9 has the HEIFWriter API and partial handling, but not the full native image decode that arrived in Android 10.

Even on a supported version, decoding still depends on the device's HEVC hardware codec, so budget phones can fail where flagships succeed. App coverage varies too: Google Photos and Files by Google open HEIC reliably on Android 10+, and Samsung Gallery supports it on One UI 2.0 (Android 10) and later.

If your gallery won't open the file, Google Photos is the simplest fix it uses its own decoder. Fossify Gallery bundles its own codecs and works offline. Why messaging works but transfers don't: WhatsApp, Telegram, and Messenger auto-convert to JPG before sending, while email, Google Drive, and cable transfers keep the original .heic which is when you hit the wall.

ChromeOS does not open HEIC natively. The built-in Gallery and Files app return "This file type is not supported," and Chrome itself can't render HEIC in web pages on any platform.

The reliable workaround: upload the file to photos.google.com (Google Photos on the web), which displays the full-resolution image and converts it to JPEG when you download it. One quirk photos that were backed up from a phone as HEIC can re-download as HEIC; renaming and re-uploading forces the conversion. A browser-based converter is the other dependable option, since it doesn't rely on any system codec.

The exact Photoshop error is "Could not complete your request because an unknown error occurred in the AIDE library." It comes from two distinct causes:

Missing Windows codecs. The most common case install the HEVC and HEIF extensions (above), and if the error persists, reset Photoshop's preferences by renaming the "Adobe Photoshop [version] Settings" folder.

The 10-bit HEIC bug. This is the newer, genuinely unfixable-by-you case. iOS 26 added HDR screenshots (Settings → General → Screen Capture → HDR on iPhone 16 Pro), which save as a 10-bit HEIC variant technically the "Main 10" profile, brand identifier HEIX. These files, and 10-bit HEICs exported from apps like DaVinci Resolve, fail in Photoshop with the AIDE error and won't even generate a Windows Explorer thumbnail, while normal camera HEICs open fine. Adobe confirmed and escalated this as a bug in September 2025. Photoshop only fully supports 8-bit HEIC, so until a fix ships, converting the file to JPEG or PNG is the way through. (Odd but useful: cropping the screenshot in the iOS Photos app after saving produces a file that opens normally.)

If you're the iPhone user tired of sending files nobody can open, switch your camera to JPEG: Settings → Camera → Formats → Most Compatible. New photos save as JPEG and new video as H.264 (High Efficiency is the HEIF/HEVC setting).

Two things to know. First, it only affects future captures existing HEIC photos stay HEIC and need separate conversion. Second, some iOS updates have been reported to reset this back to High Efficiency, so re-check it after upgrading.

There's also an auto-convert option: Settings → Photos → Transfer to Mac or PC → Automatic converts HEIC to JPEG when importing over USB to a computer. "Keep Originals" preserves HEIC. Note this mainly applies to direct USB transfer, not iCloud or Drive uploads.