How to connect WebDAV IIS with SharePoint

This "how-to-connect" documentation will explain the initial configuration of an example connection from WebDAV IIS to a SharePoint Online List in Office 365. We will be synchronizing data stored in WebDAV IIS.


This guide presupposes that you have installed the Layer2 Cloud Connector and that you are familiar with its basic functionality. The Layer2 Cloud Connector User Documentation will provide you with all necessary information.




1. Configuring WebDAV IIS

2. Configuring the Layer2 Cloud Connector

2.1 Creating a new connection

2.2 Configuring the Data Entity 1

2.3 Configuring the Data Entity 2

2.4 Running your connection

3. Hints and known issues

3.1 Connection direction

3.2 Connecting to WebDAV in the command prompt

1. Configuring WebDAV IIS

To connect to WebDAV IIS you must configure the service on your server first. More information about how to configure it in the Windows Server 2012 and other servers can be found here.

After configuring your WebDAV IIs, you should find your mapped driver in the Windows Explorer with a name like DavWWWRoot.


WebDAV IIS mapped driver 


The local address from the WebDAV IIS is \\localhost. You must also define a shared folder inside the WebDAV IIS root folder. The final directory should look like this:



2. Configuring the Layer2 Cloud Connector

2.1. Creating a new connection

Create a new connection by using the Create New Connection option in the Actions pane (right-hand side). The new connection will appear at the bottom of the Connection Manager List (left-hand side). Click on your newly created connection to open the connection configuration settings.


Choose a meaningful name for your connection and replace the current "New Connection" Connection Title with it.


Connections to WebDAV IIS can be bi-directional. An initial connection should always be uni-directional to assure that both data entities are identical before switching to bi-directional. Therefore, choose Left to Right as Direction. You can change this setting after your initial synchronization finished successfully.


Step 1 WebDAV IIS connection setup.png



2.2. Configuring the Data Entity 1 (WebDAV Folder, Data Source)

We will now set up our Data Entities. Go to the data entity “Data Entity 1” to open the configuration settings.


Choose a Data Entity Title. It is recommended to give your entities meaningful names to maintain an overview when you decide to set up multiple connections.


Select the Data Provider for file system from the data provider list. You can search for file system by typing into the selection box.


Step 2 WebDAV IIS integration source setup.png


For the Connection String, we need the in step 1 mentioned information. You can copy the below connection string and adjust it to match your gathered information. Use the Verify Connection String option to evaluate if the provided connection string is valid.






  • "Directory=\\IP-Address\sharedfolder;" this property must point to a valid IP-address and also contain the shared folder.


The Select Statement text box is used to define specific data queries. We do not need it in this case.Save Changes.


Step 2.5 WebDAV IIS integration connection string setup.png


To check if all necessary columns are received, you can use the Preview Data option on the right-hand pane which will provide you with a pop-up window showing your sample data from your WebDAV IIS entity.



Preview data of WebDAV IIS integration.png


2.3. Configuring the Data Entity 2 (SharePoint Document Library)

We are going to send the data to a custom SharePoint Online list. It's required that you set up this list prior to the next steps. Your list should contain matching columns according to your source entity.


Use the left-hand pane to switch to the data entity "Data Entity 2". We will be using the Layer2 SharePoint Provider for this setup. 


For more information about the SharePoint provider visit:


You can copy the below Connection String which contains the minimum of required properties to connect to your custom SharePoint Online list.




  • "URL=https://your_sharepoint_website_url/your_list/AllItems.aspx;" this property defines the URL of your custom list that will be addressed.
  • "Authentication=Microsoft_Modern;" this property will determine the authentication method used. Microsoft_Moddern is the default authentication method to access Microsoft Office 365 / SharePoint Online and should work in most cases, even if the SharePoint site is connected to an ADFS. This authentication does not need any further connection string settings, other than the URL of the connected system.


Enter the password that belongs to the user account used in the connection string into the Password field. Save your changes by using the right-hand pane option Save Changes.


Step 3 WebDAV IIS integration target setup.png


In the next step, we will configure our mapping settings. Click on the Mappings option on the left-hand pane. If your fields from SharePoint are named identical to the fields from your source system, the Enable Auto Mapping option will match those columns. Disabling this option allows you to match your columns as needed. We enabled auto-mapping in our setup. Save your changes by using the right-hand pane option Save Changes.


Step 4 WebDAV IIS integration mapping.png


2.4. Running your connection

To run your connection switch back to the main connection configuration node and use the Run Now Button located on the bottom of the setup page. The Run Synchronization Toolbox will also display the synchronization process. 


Step 5 WebDAV IIS data integration start.png


Below is a data preview of the information we have accessed in our source entity:


WebDAV IIS integration ready.png


This will be the result in our SharePoint Online list after our initial successful synchronization:


Finished WebDAV IIS integration.png

If you want to use a bi-directional synchronization, you can now switch your connection direction after our first initial synchronization run finished successfully. See section 3.1 for further information.

3. Hints and known issues


3.1. Connection direction

As far as tested, this connection supports uni-directional as well as bi-directional synchronizations. 


After adjusting the direction to bi-directional, you should check your Mapping Settings again, because some systems might include read-only columns that cannot be mapped directly.


We also recommend to choose a Conflict Resolution that matches your environments needs. You can find out more about the different conflict resolutions in our Layer2 Cloud Connector User Documentation.

3.2. Connecting to WebDAV in the command prompt

If you followed the installation and configuration tutorial from the posted link, you will use the command prompt to connect to your WebDAV server. The command does not use the / as described and should be like this:

net use * http://localhost/





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