My application works with descktop browser but it shows "The page you requested was not found." error by mobile browser. (the screenshot was made by chrome simulator but it shows same by real mobile(android) too)
I already set mobile site url to "Mobile Site URL" field from Setting tab
and turned on "Website - Mobile" checkbox on App Details tab.
I spent all my day trying to find solution without success. Hope someone can help me.
Unfortunately this problem can't be solved :(
https://developers.facebook.com/bugs/1051463851558493/
Hey all,
We recently identified a handful of apps misusing our mobile App
Center to redirect people to unauthorized sites. As a precaution, we
have temporarily turned off the ability for developers to direct to a
destination URL for any app in the "Mobile Site URL" field on the dev
site.
We will be in touch shortly to discuss specific next steps with your
team.
Best,
The Facebook Team
Related
It's been about 2 months now. We manage several facebook pages and all these pages were linking to native iOS / Android apps from the CTA button where users were either opening their apps via "Use App" link or were redirected to download them in case they didn't have it installed.
What happens now is that the dialog to connect your app via the "add button" function in Facebook pages, it only shows a textfield to redirect the users to a website (image attached). There is no way to link to a registered app (of course there is a related app registered with all the relevant platforms enabled and the admin has access to it). Facebook, as always is completely silent and not responding to any support requests, clients that had their apps linked to pages now ask us what happened and we are out in the cold without being able to understand wtf is happening.
This happens to 90% of our pages, some of them still have a "Use App" button that works just fine, but all others have the above problem. Also, new pages, suffer from the same problem as well. Changing the page theme doesn't seem to do anything. One (strange) finding is that if you download the pages management app in a mobile device, there is also a checkbox which allows to enter a deep link url besides the standard url but just that. The list with the apps that we had access to link to pages has just vanished.
Any ideas? Anyone having the same issue?
I have a Facebook app (canvas app), let's say https://apps.facebook.com/test, that redirects and works as expected on the desktop (on all browsers that I have tested).
On mobile phones (both from the FB app and the browser) the path gets redirected to https://m.facebook.com/apps/test/?ref=web_canvas, which gives a "This page cannot be found" error. Why?
This has been reported as a bug to Facebook and Facebook has confirmed it as a bug. They have not provided a date on when the fix will be ready.
You can follow the status of the bug here:
https://developers.facebook.com/bugs/1051463851558493/
Update: Facebook have (since the information struck-out below) completely removed support for this. The thread about this is here:
https://developers.facebook.com/bugs/1051463851558493/
The top-level information is:
We have now deprecated Mobile Canvas URL. This means that you will no
longer be able to direct to a website/app directly within the Facebook
mobile web based upon the external destination URL you have specified
in the 'Mobile Site URL' field for the app on developers.facebook.com.
Furthermore, we have removed the 'Mobile Site URL' field from the app
setup going forward. This deprecation also applies to apps that were
previously whitelisted.
So it's time to move away from this functionality, and either integrate the newer FB Instant Games functionality or just link to an external website as having your canvas app hosted inside the FB mobile app simply isn't possible as it was in years gone by.
Facebook has disabled mobile URLs working by default:
We recently identified a handful of apps misusing our mobile App Center to redirect people to unauthorized sites. As a precaution, we have temporarily turned off the ability for developers to direct to a destination URL for any app in the "Mobile Site URL" field on the dev site.
Now if you wish for this functionality to work, you need to be logged into Facebook and then go to the following URL:
https://www.facebook.com/help/contact/588209321338256
This URL will effectively put your request in a queue, for someone at Facebook to manually verify your app configuration isn't malicious, and then enable the redirection. I do not like posting this answer, as I know it will eventually become invalid, but as of today it is the only answer. As stated by Scott, you can follow progress on this issue here:
https://developers.facebook.com/bugs/1051463851558493/
Please ignore the fact it claims the issue has been 'Fixed' as Facebook count the above workaround as a fix. If you read through the comments on the bug you can note the waiting time to get the URL fixed (on a per app basis) is typically several weeks.
On May 28th, 2017, Facebook confirmed that the Mobile Canvas URL has now been deprecated. Any apps already using (and white listed) will stop working, and no new apps will be accepted.
Hi everyone,
First, please accept my sincere apologies for the delay in getting
back to you with an update on the status of Mobile Canvas URL. I
understand your frustrations, particularly if you submitted your
details via the form and were waiting on a response.
We have now deprecated Mobile Canvas URL. This means that you will no
longer be able to direct to a website/app directly within the Facebook
mobile web based upon the external destination URL you have specified
in the 'Mobile Site URL' field for the app on developers.facebook.com.
Furthermore, we have removed the 'Mobile Site URL' field from the app
setup going forward. This deprecation also applies to apps that were
previously whitelisted.
The Mobile Canvas URL feature is a vestige of a long ago deprecated
product called Mobile Canvas. Facebook maintains a high commitment to
quality, so we don't want to leave unsupported products active —
especially when they continue to cause bugs for our developers. Going
forward, we're recommending you take advantage of the well-supported
Facebook Games on Web product to drive traffic to your app.
We've also introduced Instant Games which lets people play mobile
games within Messenger and Facebook News Feed. We invite you to sign
up for our closed beta program. We believe letting people play games
together on Facebook is a powerful experience for both players and
developers.
If your app is still set up to rely on Mobile Canvas URL
functionality, we recommend taking the following actions:
If you're using Mobile Canvas to link to a page on mobile web, you need to update your app to handle the redirection in the desktop
iframe. User interaction is required to redirect away from web canvas
as our Platform Policy does not allow automated redirects from canvas.
If your app was previously whitelisted, you will need to take action as this deprecation supersedes any workarounds you have in place.
Thank you for your understanding as we continually improve the
products and services we offer to both developers and players. Again,
please accept my apologies for the wait in getting back to you with
this information
Best regards,
Tim
See this thread https://developers.facebook.com/bugs/1051463851558493/
On my client's Fanpage, a third party app is running for a contest. How can I make this FB contest page available on mobile? I read the answer here:
http://facebook.stackoverflow.com/a/10833366/461119
also
Facebook SDK : Page Tab App returns not found in mobile Facebook App
I do not understand it clearly.
Is the query parameter ?ref-ts which we have to add at the end of URL?
What does it mean by "It helps in the browser but not the app itself."?
Will it help to see the App on mobile and click on it to go to the contest page on FB?
Also, I found this answer:
Works as advertised! Thank you. I was getting 404, but simply adding
ref=ts in my redirect URLs (I force users to use my app as a page tab)
fixed it! – Guillaume Boudreau
under the first link above but what is forcing users to use app as a page tab?
How can I set App as a page tab?
little bit confused.
I searched the web vigorously but did not get any clear explanation.
My observations about this issue:
Seems like it's an ANDROID issue, Work OK on iPhone's
Work with the link redirection services like Bit.ly (where the bit.ly link included the ref=ts)
I sent an email to Facebook for ANDROID developers.
Hi,
my iPhone's user colleagues can open links to page tab app with ref=ts
parameters but on Android we can't ;-(
The only way we've been able to do it is when the link to the app is
under a bit.ly redirection link
The problem is only when the links are open through the Facebook App.
Thanks
Let us know
Max*
You can access to your app using the next link https://apps.facebook.com/YOUR-APP-ID
In this way, you can access from a desktop or a mobile with no problem.
I've developed an android mobile application, which post on Facebook wall. So after giving the post, it shows "via MyAppName" under the post. And it shows as a link. If I click it, it shows
The page you requested was not found.
Now I want to add a Facebook page with this link, suppose a publicity page for my app. Or may be a URL of my application link on the Play store.
How can I do that? Will my app have any negative effect if I do that!
Currently only selected option is "Native Android App" under "Select how your app integrates with Facebook" on the Facebook developers' site for this app.
I've searched a lot, but can't find anything......... Please help....
This usually links to the Canvas URL (dev settings). If you did not set one, you get the error message.
So, if you want the link to lead somewhere, just use a canvas URL and redirect to a page.
Keep in mind that you need a server with SSL for that, btw.
I created a facebook and placed it on my facebook brand page, I also created a post on the wall of that page with the link to the app.
all works well until people started calling me saying that when accessing using FB iPhone app it will redirect to an error page "the page your requested was not found"
I tried adding a link (same page) to the "Mobile Web" link of my app in the FB Developer App.
it still doesn't work..
I need people accessing the app page to get some content.. I know it is possible but cant find how..
thanks for your help
Tabs aren't supported via the app or mobile site. Best you could do is add the query parameter "ref=ts" to prevent the page from going switching to mobile. It helps in the browser but not the app itself.
So add ?ref=ts to the end of your app url and at least mobile users can see it in their browser.
http://facebook.stackoverflow.com/a/10833366/461119