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maheshkumaryu's avatar
maheshkumaryu
Copper Contributor
Mar 06, 2025

Teams app is crashing if window.location.hash it set

We are using the Teams Channel Tab app with a component that replies on the hash parameter.

On click of a button from a list of folder within the Tab, we are trying to set the window.location.hash.
Another component uses an event listener to listen to the hashChange and retrieves this hash parameter that was set and uses for further processing.

This works perfectly fine in Outlook addin as we are rendering the same component in Teams and Outlook
However, as soon as I set the window.location.hash, the app crashes without any error in Developer tool Console.

We have hosted the Tab app at - "https://localhost:8080/#/channel"
I am thinking of 2 possible causes for this crash-

1. Is the app trying to crash when I am setting the hash as it already has '#' in the url?
2. Is there a limitation where we cannot set and get window.location.hash while inside the Teams Tab app?

developer
Developer Support
microsoft teams
  • Sayali-MSFT's avatar
    Sayali-MSFT
    Icon for Microsoft rankMicrosoft
    Mar 07, 2025

    Hello @maheshkumaryu, Thank you for your inquiry about your Teams app development issue! To assist you better, could you please provide the following details? 

    1. Reproduction Steps: Please share the steps you took to encounter the issue. 
    2. Documentation Links: Any specific documentation you followed that relates to your problem. 
    3. Teams Client Version: What version of the Teams client are you using? 
    4. Code Snippets: Relevant code snippets that illustrate the issue. 
    5. Manifest Package: If applicable, please share the manifest package for your app. 

    This information will help us better understand the situation and provide a more accurate response. 

     

  • firatkutay's avatar
    firatkutay
    Copper Contributor
    Mar 06, 2025

    It sounds like you're encountering a frustrating issue with the Teams Channel Tab app. Based on your description and some findings, here are a few insights and suggestions:

    1. Hash Parameter in Teams: Teams apps can sometimes behave differently compared to other environments like Outlook. While using window.location.hash is generally supported in web applications, Teams might impose certain restrictions or handle hash changes differently due to its internal navigation and sandboxing mechanisms.
    2. Potential Causes:
      • Duplicate Hash Issue: If the URL already contains a #, setting window.location.hash might conflict with Teams' internal routing logic, causing unexpected behavior.
      • Teams-Specific Limitation: Teams might restrict or override certain browser APIs, including window.location.hash, to maintain app stability and security.
    3. Workarounds:
      • Use Teams SDK: Instead of directly manipulating window.location.hash, consider using the Microsoft Teams JavaScript SDK for navigation and state management. For example, you can use microsoftTeams.navigateToTab or other SDK methods to achieve similar functionality.
      • Custom State Management: If the hash parameter is critical for your app, you could implement a custom state management solution (e.g., using query parameters or a global state object) instead of relying on window.location.hash.
    4. Debugging Steps:
      • Check the Teams app logs for any hidden errors or warnings.
      • Test the app in different environments (e.g., Teams desktop vs. web) to see if the issue persists across platforms.

    If these suggestions don't resolve the issue, you might want to reach out to the Microsoft Teams Developer Community for further assistance. Let me know if you'd like help exploring any of these options!

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