SOLVED

Is it possible to disable file sharing?

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New Contributor
17 Replies
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Hi Azhashemi,

 

Can you elaborate on what you mean by file sharing? Do you want to be able to disable uploading and viewing files, sharing files in chats, all of the above?

 

Kyle - Microsoft Teams PM

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My organisation have a similar need based on protection of client information which might have reputational risk. We thus have a hybrid requirement were Teams is used for persistent chat but file storage is on premisses. In our case we were hoping, instead of disbleing files, to change the library to only allows the saving of urls to files stored elsewhere, ie on premisses and not in 365. Disablement of files would be the next logical step for us. Kind regards
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I think he is talking about disable file sharing in the context of the Teams Site
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Hi Kyle, yes, no files of any kind should be shared, uploaded or viewed via teams. We want to keep the files in on-prem SharePoint. We will then share the urls to on prem files in team chats instead of the actual file. I realise this is one of the main features of teams! We just cannot risk users putting sensitive info in the cloud, but we would like to use all the other features provided by Teams. Thank you for your response.
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This seems dead, but the question is still relevant to my interest. Anyway to disable file sharing at all?

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Unfortunately there is not a supported way to disable file sharing and uploading in Microsoft Teams. I understand the needs of your organizations and where the ask is coming from, but enabling this is not an immediate priority.

 

Please leave a suggestion on our UserVoice site - we use this to gauge interests in features and help prioritize our roadmap: https://microsoftteams.uservoice.com 

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What happens if file sharing is disabled at SharePoint level?
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We tried that. Still uploads files to it.
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Hi All,

We also tried disabling SP on our tenancy, but it didn't prevent the upload.
What about using EMS to prevent uploads? I'm thinking of rules based on file extentions which will prevent uploading? Can it work? Thanks
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disabling sharepoint option within a user license will disable file uploads in Teams

 

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@Erol Diener 

Sorry to resurrect an old topic, but can you confirm that if Sharepoint is disabled in the user license that all chat functionality within Teams still functions for that user?  How about the ability to view the Wiki page for the Team/Channel?

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My understanding is that even if you disable the SharePoint entitlement on the license as per Erol's suggestion, SharePoint will still be accessible to the users - this is because SharePoint (unlike, for example Exchange) does not check whether the user has a valid license).
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En similar caso, pero tomando en cuenta que SharePoint es la base del almacenamiento, lo que hice fue abrir Archivos en SharePoint, verlas opciones de Compartir y quitar a los grupos de Miembros y Visitantes.

Esto evita que puedas cargar un archivo....

Inicialmente cumple con lo que pidió un cliente, comenten si les fue útil.

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Best Response confirmed by ThereseSolimeno (Microsoft)
Solution
Thank you for the suggestion.

We eventually took the view that Teams is a platform for collaboration and communication with file sharing being our immediate issue. Remember this is not allowed in our environment due to the absence of certain data governance requirements. (We hope to close these soon)

We decided to control the collaboration piece, especially SP file sharing, by limiting who can create O365 groups needed to create new Teams. That way we can control the release of a Team in Teams and as such the SP capabilities. We only release the collaboration bit under exceptional circumstances and with the users full understanding of the risk/our outstanding compliance requirements and governance requirement. So we control Teams for collaboration in a very rigid and time consuming way.

With Teams for communication on the other hand there is now rigidity over who does what, except for OneDrive which our Info Sec team controls. They decide who get access to it through a 3 rd party tool. So Teams for communication gives Teams’ “Skype for Business” components to the end users. Instead of posts in a channel they use chats; instead of a Teams of people to have instant/quick or recurring meetings they use chat groups.

Overall this approach works well for us as, especially with the Covid19 causing more people to work from home and requiring quick deployment of Teams capabilities for communication. It would have been just to time consuming to follow the ridged Teams for collaboration approach while being conscious about compliance’s data governance requirement not being met. Not to mention the mess an unstructured/governed SP release via Teams for collaboration would have caused.

Kind regards
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Agree, the quick fix here is to not assign OneDrive and Sharepoint License for Team users, this way no one can share files in chats. If you have assigned them a Team then even if the licences are not assigned for users, they will be be able to upload to a converstation within the Team channel as well as the File tab.
Cloud App Security allows you to create a custom policy to block file upload and download, this works for the Teams WebUI, however not for the client as its not using Modern authentication just yet.

 

Been on the same issue, here is how to do it:

https://exchangekb.com/2020/06/26/block-file-sharing-in-teams/

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How to not assign SharePoint and OneDrive license for team user?

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@eterous it is possible to control file sharing with the Ethical Wall solution from AGAT Software. 

https://agatsoftware.com/microsoft-teams-ethical-wall