Unable to download a passbook file .pkpass on iPhone (Safari) - iphone

Question

I've got a link on a web page that should enable users to download a passbook file from a link, however when clicking on the link in Safari on an iPhone, I get the following error message:
Safari cannot download this file.
I have read similar Q&As on here, and the MIME type is set to application/vnd.apple.pkpass. The passbook can be downloaded on a Windows phone.
Any suggestions on why this is the case and how to resolve this so users can access the passbook file?
I've downloaded the passbook on a desktop and this is what it contains.
The pkpass contains the following files:
icon.png
logo.png
strip.png
manifest.json
pass.json
signature
An example of the manifest.json:
{
"icon.png": "fa6b59072ae5c8163c903d8c8b5f2e4a45fbd49b",
"logo.png": "3165c9be22cbf76e2b3118972dabaef8918390f5",
"strip.png": "5d15c45f543e8088c227fc54a6c01d1f9f0b1db3",
"pass.json": "0f536b34a6b73a7799aae43ff9861dde45a6dfc6"
}
An example of the pass.json:
{
"passTypeIdentifier":"pass.com.XXXX.sampleticket",
"formatVersion":1,
"serialNumber":"TIC1000000518",
"description":"XXXX",
"organizationName":"XXXX",
"teamIdentifier":"W9XR4FBDD4",
"logoText":"Dragon Bay",
"foregroundColor":"rgb(0,0,0)",
"backgroundColor":"rgb(255,255,0)",
"labelColor":"rgb(0,0,0)",
"eventTicket":{
"headerFields":[],
"primaryFields":[],
"secondaryFields":[{"key":"activity",
"label":"11/20/2015 12:00 AM",
"value":"One Day at the Museum"
}],
"auxiliaryFields":[],
"backFields":[{
"key":"terms",
"label":"Terms & Conditions",
"value":"XXXX"
},
{
"key":"contact",
"label":"XXXX",
"value":"XXXX"
},
{
"key":"legal",
"label":"Legal",
"value":"XXXX"
},
{
"key":"notes",
"changeMessage":"%#","label":"Notes","value":""
},
{
"key":"lastUpdated",
"label":"Last Updated",
"dateStyle":"PKDateStyleMedium",
"timeStyle":"PKDateStyleShort",
"isRelative":false,
"value":"2016-01-08T19:00Z"
}]
},
"barcode":{
"format":"PKBarcodeFormatPDF417",
"message":"1000000518",
"messageEncoding":"UTF-8",
"altText":"1000000518"
},
"authenticationToken":"0123456789ABCDEF",
"webServiceURL":"https://XXXX/passbook.svc"
}
I had a similar issue before which I resolved by ensuring the webServiceURL was https, however that is the case in this scenario.

Answer 1

Examining your logs, you have a problem with your signature.
Aug 4 17:08:22 pfr MobileSafari(PassKitCore)[611] <Notice>: Error evaluating trust: <private>
Aug 4 17:08:22 pfr MobileSafari(PassKitCore)[611] <Notice>: Signature validation: *** FAILED ***
Aug 4 17:08:22 pfr MobileSafari(PassKitCore)[611] <Fault>: Invalid data error reading pass <private>. <private>
Aug 4 17:08:22 pfr MobileSafari(PassKitCore)[611] <Notice>: Invalid data error reading pass <private>. <private>
Aug 4 17:08:22 pfr MobileSafari[611] <Notice>: PassBook Pass download failed: The pass cannot be read because it isn\M-b\M^#\M^Yt valid.
Things to check:
Do the SHA1 hashes of each file match the manifest?
Is the certificate revoked or expired?
Does the signature contain the updated Apple WWDR certificate (the old one expired in February)?
Does the signature contain a signing date?
Update:
After checking your signature, I can see that it was signed by the expired Apple WWDR certificate. This certificate expired 2016-02-14T18:56:35Z.
Apple Root CA0 080214185635Z 160214185635Z
Download the new certificate and try compiling the pass again.