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Dynamics 365 Community / Forums / Service | Customer Service, Contact Center, Fie... / Mobile App - Internal ...
Service | Customer Service, Contact Center, Fie...
Answered

Mobile App - Internal issue while downloading your data (Error code: AppCacheManifestParsingError)

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Posted on by Emmanuel-E 38
We are currently experiencing the following issue in our D365 Field Service Mobile App when syncing data. See screenshot below:
 
 
 
What we have found:
  • We noticed the issue this morning (March 18, 2025). Prior to this, the app was working fine.
  • The tables, filters and settings in the offline profile have not changed since the last time it worked.
  • We have multiple environments and have noticed the same issue in all our environments.
 
 
 
We have tried the following so far:
  • Force closed and re-opened the app.
  • Signed out and back into the app.
  • Deleted and re-installed the app.
  • Re-published the offline profile.
  • Re-published the mobile app.
  • Changed to another offline profile.
 
Please advise if anyone has a solution for this.
 
Thank you.
I have the same question (0)
  • Suggested answer
    Dharanidharan Profile Picture
    Dharanidharan 638 User Group Leader on at
    It sounds like you've done some thorough troubleshooting steps already. Since the issue is affecting all your environments and started recently without any changes to the offline profile, here are a few additional things you can check and try:
     
    Possible Causes & Solutions:
    Check Microsoft Service Health Dashboard
    • Since this issue is occurring across multiple environments, it may be a Microsoft service outage or incident related to Field Service Mobile Sync.
    • Go to Microsoft 365 Service Health (if you have admin access) and check for any reported issues.
    Verify Sync Filter Criteria
    • Even though the filters haven’t changed, sometimes unintended changes to data or updates to the platform can cause unexpected sync behaviour.
    • Try simplifying the filters in the offline profile temporarily and re-publishing.
    Check for Recent D365 Field Service Updates
    • If the issue started today (March 18, 2025), check if there was a Field Service update pushed by Microsoft that might be impacting sync.
    • You can check the Power Platform Release Planner (here).
    Test Sync on Another Device
    • Try syncing on a different mobile device (Android/iOS) to check if the issue is device-specific.
    Check for Recent Plugins, Workflows, or API Changes
    • If there were any recent deployments, plugin changes, or workflow modifications, they might be interfering with the sync process.
    Enable Logging in Field Service Mobile
    • Enable tracing logs in the Field Service Mobile app and check for any errors in the logs.
    You can find logs under:
    • Android: Android/data/com.microsoft.crm.fieldservice/files/Logs/
    • iOS: Use the diagnostic tools in TestFlight (if applicable).
     
    Test Sync with a New User
    • Try signing in with a different user account (preferably a user with similar roles) and see if the issue persists.
    Raise a Support Ticket with Microsoft
    • If none of the above solutions work, I recommend opening a Microsoft Support Ticket via the Power Platform Admin Center or Field Service Help & Support (here).
    Let us know if any of these steps help resolve your issue!
  • JS-22030639-0 Profile Picture
    JS-22030639-0 Microsoft Employee on at
    This is fixed in the latest version of the app.
    We suggest logging out and logging in again and see if issue persists.
  • Verified answer
    Daivat Vartak (v-9davar) Profile Picture
    Daivat Vartak (v-9d... 7,845 Moderator on at
    Hello Emmanuel-E,
     

    You've done a thorough job troubleshooting the issue with the D365 Field Service Mobile App's sync problem. The fact that it's happening across multiple environments and started suddenly points to a potential issue outside your local configurations.

    Let's break down the error messages and explore potential solutions:

    Understanding the Error Messages:


    • "Download couldn't finish. Try again later. Internal issue while downloading your data (Error code: AppCacheManifestParsingError)": This suggests a problem with the app's cache manifest, which is used for offline functionality. It indicates a potential issue with how the app is storing or retrieving data for offline use.
    • "Server error. Please retry.": This is a more generic error, indicating a problem communicating with the Dynamics 365 server. It could be related to network connectivity, server-side issues, or data synchronization conflicts.
    • "Application data downloaded" and "Data downloaded": These messages indicate that some data did successfully sync, but the overall process failed.
    • "41 files available": This shows that the app is aware of data to sync.

      •  

    Potential Causes and Solutions:

    1. Microsoft Service Outage or Issue:

       

      • The most likely cause, given it's happening across environments and started suddenly, is a temporary issue on Microsoft's end.
      • Check Microsoft Service Health Dashboard: Go to the Microsoft 365 Service Health dashboard to see if there are any reported issues with Dynamics 365 Field Service or Dataverse.
      • Wait and Retry: If there's a Microsoft issue, the best course of action is to wait and retry the sync later.

    2. App Cache Manifest Issue:

      • This error (AppCacheManifestParsingError) is more specific. It suggests a problem with the app's cache, which stores data for offline use.
      • Try Clearing App Cache (if possible): Some mobile apps have an option to clear the app's cache within the app settings. Check if this is available.
      • Reinstall the App (You already did this): You've already tried reinstalling, which should clear the cache.
      • Check Offline Profile for Corrupted Data: While you said the profile hasn't changed, inspect it closely for any unusual characters or settings. Try creating a new, simplified offline profile for testing. 

    3. Server-Side Data Synchronization Issue:
       
      • The "Server error. Please retry." message could indicate a problem with data synchronization on the Dynamics 365 server.Check for Recent Customizations: If any customizations (plugins, workflows, etc.) were recently deployed, they could be causing conflicts.Check for Data Conflicts: Large data volumes or complex relationships might be causing synchronization issues.Contact Microsoft Support: If the issue persists, contact Microsoft Support. They can investigate server-side logs and identify any specific errors. 

    4. Network Connectivity Issues (Less Likely):

      • While less likely given the other error messages, ensure that the mobile devices have a stable internet connection.
      • Try switching between Wi-Fi and cellular data.

        •  

    Specific Recommendations:

    • Prioritize Checking Microsoft Service Health: This is the most important step, as it will confirm if there's a widespread issue.
    • Contact Microsoft Support Immediately: Given that you've tried all the standard troubleshooting steps, contacting Microsoft Support is the best course of action. They have access to server-side logs and can provide more specific guidance.

    Important Note:

    • The "AppCacheManifestParsingError" is a more technical error, suggesting a potential bug or issue with the app itself.
    • Microsoft Support will likely need to investigate this error further.

      •  

    I hope this helps!

     
    If my answer was helpful, please click Like, and if it solved your problem, please mark it as verified to help other community members find more. If you have further questions, please feel free to contact me.
     
    My response was crafted with AI assistance and tailored to provide detailed and actionable guidance for your Microsoft Dynamics 365 query.
     
    Regards,
    Daivat Vartak
  • Emmanuel-E Profile Picture
    Emmanuel-E 38 on at
    @Daivat Vartak (v-9davar) thanks for that detailed explanation.
     
    It turns out that, the issue was traced back to the Unified Client Content Provider. Microsoft pushed an update which resolved this. 
     
    I re-installed the mobile app and there are no more errors.
     
    Thanks @JS-22030639-0 and @Dharanidharan for your help and input as well. I appreciate it. 
     

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