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Power Platform Community / Forums / Power Apps / SharePoint Thumbnails ...
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Suggested Answer

SharePoint Thumbnails not working in PowerApps

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Posted on by cwebb365 3,304 Most Valuable Professional
Anyone else having issues using SharePoint.Thumbnail.Large in their apps in image controls? It just stopped working overnight and I doubt it's just my tenant? 
Categories:
Building Power Apps
I have the same question (10)
  • cwebb365 Profile Picture
    cwebb365 3,304 Most Valuable Professional on at
    I just ended up rolling with 'link to item' which originally wasn't working due to SharePoint token. That's the downside of using link to item vs. thumbnails you have to have a seperate SharePoint session active in browser for the images to download properly. Sucks but it's better than nothing for now. 
  • Suggested answer
    Mohsin Ali Profile Picture
    Mohsin Ali 582 on at
    Hello @cwebb365 - As per the following documentation, the images are temporarily cached. Images that have been cached for a long time may be removed and regenerated on demand.
    Additionally, Power Apps generally refreshes metadata every 30 seconds. You might also want to select the ellipsis (...) and manually refresh the data source to see if that resolves the issue.
     
     
    If my suggestions are helping you or giving you a clue to further investigate the issue, then please mark them as verified. This way you're also helping the community members to quickly navigate the resolution.
     
  • cwebb365 Profile Picture
    cwebb365 3,304 Most Valuable Professional on at
    This has nothing to do with cache. These are new files that have been uploaded and it's literally been working for 7 + years without issue.  The URL's generated from thumbnail.large etc. are just dead. New apps with SharePoint data source, connect to a document library with .jpg's. Add image control in a gallery and use thisitem.thumbnail.large and that should reproduce the problem assuming it's an issue across everyone. 

    I've setup a fresh test app and same issue. 
  • WarrenBelz Profile Picture
    WarrenBelz 156,460 Most Valuable Professional on at
    Your observation on ‘Link to item’ is relevant also as it does also not work on mobile devices due to the requirement that the URL needs to be “anonymously” resolved. The Thumbnail syntax is still working fine for me here. (Australia - so I do not know if this is of any assistance), however I use 
    ThisItem.’{Thumbnail}’.Large
     
    Please ✅ Does this answer your question if my post helped you solve your issue. This will help others find it more readily. It also closes the item. If the content was useful in other ways, please consider answering Yes to Was this reply helpful? or give it a Like ♥
    Visit my blog     Practical Power Apps    LinkedIn  
  • stingray Profile Picture
    stingray 202 on at
    Also happening to our apps that have been in production for many years, thumbnails have just stopped showing, came to find if others were experiencing this issue which they are. MS please respond!
  • Suggested answer
    Mohsin Ali Profile Picture
    Mohsin Ali 582 on at
    Hello @stingray - It seems this could be a region-specific issue, as @WarrenBelz confirmed in the same thread that it is working absolutely fine for him in Australia.
     
    At this point, I would suggest raising a support ticket with Microsoft for further investigation.
     
     

     
  • cwebb365 Profile Picture
    cwebb365 3,304 Most Valuable Professional on at
    I've got a ticket in, but as usual you get a response with some questions within 4 hours, you respond with overwhelming evidence it's a Microsoft Problem then crickets for days. And I bet I'll get more questions that are irrelevant soon. lol
     
  • Mohsin Ali Profile Picture
    Mohsin Ali 582 on at
    This is usual service protocol 🙃 @cwebb365 - But please post an update as soon as you're able to resolve.
  • AG-24080234-0 Profile Picture
    AG-24080234-0 4 on at
    Having same issue, my users have complined this morning that they no longer see the thumbnail small from with in the galley nor in the image controle once item has been selected. 

    Australian based, "Airline"
  • Suggested answer
    Syed Aqib Raza Profile Picture
    Syed Aqib Raza 68 on at

    Yes, this looks like it could be a recent Power Apps/SharePoint service-side issue, especially since SharePoint.Thumbnail.Large was working previously and stopped without any changes to the app or SharePoint list. Power Apps officially supports SharePoint image columns and their thumbnail sizes, including Large.

     

    I would suggest checking the same app in another browser/tenant and testing ThisItem.Thumbnail, ThisItem.Thumbnail.Medium, and ThisItem.Thumbnail.Large. If the images fail across multiple apps or users, it is more likely a Microsoft service/connector regression rather than an app-specific formula issue.

     

    There have also been recent community reports of SharePoint images unexpectedly disappearing from Power Apps without changes to the app or list, so you're probably not alone.

     
     
     
     

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