iPhone 15 – Can't download attachments in BC mobile app (error: NotFound)

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Posted on by LT-29070921-0

Hi everyone,

We're experiencing an issue with the Business Central mobile app on iPhone 15.

Since a few days ago (including after updating to BC version 26.3), the user can no longer download any attachments (e.g. PDFs from posted sales invoices). The app returns this error:

json

Things we've already tried:

Reinstalling the BC app
Restarting the phone
Logging in and out

Has anyone experienced same issues on mobile app and was able to solve this issue?

Thanks!

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Dynamics 365 Business Central

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Sohail Ahmed 11,175 Super User 2026 Season 1 on at

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This migh give you a hint to resolve your problem

https://learn.microsoft.com/en-us/dynamics365/release-plan/2023wave2/smb/dynamics365-business-central/planned-features

https://community.directions4partners.com/news/2016624

if error still presist I recommend raising a support ticket with Microsoft or posting the issue in the Microsoft Yammer BC Partner group, as it may require a backend or app-level fix from Microsoft.

✅ Mark this answer as verified if it helps you.

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YUN ZHU 100,785 Super User 2026 Season 1 on at

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This should be a BC standard issue. You can post it in the BC Yammer Group. Microsoft technicians should be able to help you solve it when they see it. Here is a similar issue.

Viva Engage : Dynamics 365 Business Central Partner Community (Formerly: Development) : Mobile app : Conversations

Thanks

ZHU

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Mansi Soni 9,245 Super User 2026 Season 1 on at

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Hello,

This appears to be a platform-related issue introduced in Business Central version 26.3 affecting the iOS mobile app. Since standard troubleshooting hasn’t resolved it, I recommend raising a Microsoft support ticket through the Microsoft Admin Center or your partner support portal. Include full details: the Business Central version, mobile app version, device model (iPhone 15), and the exact error message. This will allow Microsoft to investigate and provide a fix or workaround in an upcoming update.

Hope this answer will help you!

Regards,
Mansi Soni

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Jeffrey Bulanadi 9,121 Super User 2026 Season 1 on at

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Hi,

This behavior in BC26 typically arises when the metadata properties required for search discoverability aren't correctly applied to your custom page object.

Why the Page Isn’t Appearing in Search

BC relies on two key properties: ApplicationArea and UsageCategory. If either is missing or misconfigured, your custom page:

Will compile and publish successfully

Can be accessed via direct URL (?page=xxxxx)

But will remain hidden from Tell Me and the navigation pane

This behavior is strictly enforced post-BC18 and increasingly monitored by telemetry in newer versions

Required Properties for Visibility

Minimal Page Setup Example:

al page 50100 "Example Setup Page" { ApplicationArea = All; UsageCategory = Tasks; // Or Lists, Reports, etc. }

Additional Visibility Considerations:

Ensure Visible = false; is not set on the page or its base object

Confirm the page isn't scoped to a profile where it’s deliberately hidden

For global discoverability, publish the extension with scope = Global; not just Tenant

Steps to Resolve and Revalidate

Step 1: Check and Update Metadata

Open your AL page object and verify both ApplicationArea and UsageCategory are set appropriately

Step 2: Recompile and Re-publish Extension

Compile the extension and publish via VS Code or PowerShell with elevated telemetry enabled

Step 3: Restart Client or Refresh Browser

Restart BC Web Client

Clear browser cache if applicable to refresh the search index

Step 4: Verify via Direct URL

Use ?page=50100 in the browser to confirm successful deployment and functional page access

Helpful References
ApplicationArea Property – Microsoft Learn
UsageCategory – Microsoft Learn
Page Visibility Troubleshooting – GitHub Thread
Metadata Setup for Search Visibility – Mohana’s Blog

If you find this helpful, feel free to mark this as the suggested or verified answer.

Cheers
Jeffrey

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CU24091034-1 4 on at

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In my case, deleting and re-adding my account in the Business Central mobile app helped. It sounds ridiculous, but it worked. After that, I noticed the app became much more stable. I also had to check if apple serial number is real when troubleshooting some device issues. It took some time, but confirming the serial number gave me peace of mind. Afterwards, I could open attachments without errors. The whole process was a bit frustrating, but in the end, it solved most of my problems.

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Nimsara Jayathilaka. 5,102 Super User 2026 Season 1 on at

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Hi

There’s no configuration change on your side that resolves it permanently; it’s a product bug. Best approach: open a support ticket with Microsoft or track release notes to get the patch.

Thanks

Nimsara

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Rishabh Kanaskar 6,225 Super User 2026 Season 1 on at

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Hi,

This is a known issue in BC 26.3 mobile app on iOS. No client-side fix exists. Workaround: download attachments via browser.

Report to Microsoft or raise a support ticket, this likely requires a hotfix from Microsoft.

Thanks

Rishabh

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