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Office 365 : note


External Member

Use Contact in Admin page

External Member and Group

You can add an external member to a group

Groups and shared Mailbox : same features

  • Users can send-as or send-on-behalf of a Group mailbox, just as they would a shared mailbox.

Office 365 Groups : additional features

  • Users (members) can subscribe to receive a copy in their own mailbox of the emails sent to the Group mailbox, which makes Groups closed to distribution lists.
  • Groups include additional apps as a SharePoint team site, OneNote notebook, Planner, and Teams.
  • Groups have a guest access model for external collaboration that shared mailboxes do not (Contacts).

shared mailboxes : additional features

  • Shared mailboxes can have sub-folders in the mailbox, whereas Group mailboxes can’t.
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Visual Studio 2022 – programming on Framework 4.5

.NET 4.5 has long been out of support

To use .NET Framework via Visual Studio 2022 you have to download the nunget package :

Rename the extension of the package in .zip to decomprime it.

Put the content in this Folder :

C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.5

You have to put at the first level the content of the folder


that you can find inside the nunget

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Restrictions and limitations in OneDrive Web Download


We had a problem downloading folders using Onedrive web. Under some conditions the download of a folder stops or the result does not contain all the files of the source folder.
When we contacted Microsoft, we learned that there is a limit on downloading folders using Onedrive web:

  • The folder cannot contain more than 50,000 files
  • The single file cannot exceed 15GB in size.

Microsoft recommends using Onedrive client.