Why does my iPhone say 'file format not supported' for .pkpass?

This error typically means the .pkpass file is corrupt, has an expired signing certificate, or your device settings are interfering. Try disabling VPN, checking your region settings match the pass issuer, and re-downloading the file from the original source.

What exactly is a .pkpass file?

A .pkpass file is Apple's proprietary format for Wallet passes. It's a ZIP archive containing JSON data describing the pass, images for branding, and a digital signature. Apple Wallet verifies this signature before accepting any pass.

Can I fix a .pkpass file with an expired certificate?

You cannot fix the certificate yourself. The original issuer must regenerate the pass with a valid certificate. However, if the pass has a visible barcode, you can screenshot it and use NeatPass to create a new Wallet pass with that barcode data.

What is the difference between .pkpass and .pkpasses files?

A .pkpass file contains a single pass, while .pkpasses (with an 's') bundles multiple passes together. The .pkpasses format requires iOS 15 or later. On older devices, rename it to .zip and extract individual .pkpass files.

Why does my VPN prevent .pkpass files from opening?

When adding a pass, your iPhone may send a verification request to the pass issuer. VPNs can interfere with this authentication process or make your location appear incorrect, causing the verification to fail. Temporarily disable your VPN when adding passes.

pkpass File Won't Open on iPhone? Here's How to Fix It

.pkpass will not open. You tap it, nothing happens, or you get "File format not supported." Your event is tomorrow and you cannot add the pass to Wallet.

The file is usually not broken. Most failures come from VPN interference, region settings, or expired certificates, all fixable.

Why Your .pkpass File Will Not Open

Before troubleshooting, understand that .pkpass files are actually ZIP archives containing signed data. They must meet Apple's strict requirements to open in Wallet. Here are the most common reasons they fail:

Corrupt or incomplete file

Download was interrupted or file was damaged in transfer

Expired certificate

The issuer's signing certificate is no longer valid

VPN or region mismatch

Your device region doesn't match the pass issuer's region

Pass already expired

The pass date has passed and it's no longer valid

Troubleshooting Steps

Try these fixes in order. Most .pkpass issues resolve with one of the first few steps.

Check how you're opening it

Tap the .pkpass file directly from the source (email attachment, download link, or message). Do not try to open it from within the Wallet app; passes must be added from external sources.

Turn off your VPN

VPN connections can interfere with pass verification. Disable any VPN, then try opening the file again. This is one of the most common fixes.

Check your Country & Region settings

Go to Settings, then General, then Language & Region. Make sure your region matches where the pass was issued. Mismatched regions can cause authorization failures.

Re-download the file

The original download may have been corrupted. Delete the file and download it fresh from the original source. If it came via email, try forwarding the email to yourself and opening from the new copy.

Try opening from Apple Mail

Some third-party email apps (like Outlook) cause issues. Forward the email with the .pkpass attachment to yourself, then open it in the default Apple Mail app.

For more details on getting passes into Wallet, see our guide on adding passes to Wallet.

Watch out for .pkpasses files

If your file ends in .pkpasses (with an 's'), it contains multiple passes bundled together. This format requires iOS 15 or later. On older iOS versions, rename the file to .zip, extract it, and you will find individual .pkpass files inside.

Is Your File Actually Valid?

Sometimes the problem is the file itself, not your device. Here is how to tell if your .pkpass file is valid:

Signs of a valid file

Shows 'Add to Apple Wallet' preview
Displays pass details (event, date, barcode)
File size is typically 10KB-500KB
Recent issue date from the provider

Signs of an invalid file

'File format not supported' error
Opens as a folder of random files
Extremely small file (under 1KB)
Very old file from months/years ago

If the file is invalid, contact the issuer (airline, venue, or company) and ask them to regenerate your pass. Their signing certificate may have expired, which requires them to issue a new .pkpass file.

Need a reliable Wallet solution?

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When the Issuer Cannot Help

Sometimes companies stop supporting their .pkpass passes, or their certificates expire and they do not renew them. If you cannot get a working .pkpass file from the original source, you have another option.

If your pass has a barcode visible anywhere - in the email, on a PDF, or even the broken .pkpass file, you can extract that barcode and create your own native Wallet pass using NeatPass.

Screenshot the barcode

Capture the barcode from any source: email, PDF, or app

NeatPass extracts it

AI-powered barcode detection finds and reads your code

Creates valid .pkpass

Generates a properly signed pass that Wallet accepts

Works offline

Your new pass works without internet connection

This workaround is especially useful for loyalty cards, membership passes, and event tickets where the original issuer's .pkpass file stopped working. The barcode data is what scanners read. As long as you have that, you can create a working Wallet pass. For all available methods, see our import methods guide. Once added, your pass works completely offline.

Frequently Asked Questions

Create passes that work

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Get Your Pass Working

Most .pkpass issues come down to VPN interference, region settings, or corrupt files. Try the troubleshooting steps above, and if the original file truly cannot be fixed, extract the barcode and create your own Wallet pass with NeatPass.

Having trouble with a specific type of pass? Check our guides on converting PDF tickets or adding event tickets to Wallet.