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Calling up documents on a file server via a web server (IIS)

Applies to: viflow (supscription | 9 | 8 | 7) | Article: 1391549 | Updated on 18.06.2024

Description of the problem

The WebModel is on a web server and is accessed via HTTP(s) link. Linked files should be called from the file system. All common browsers block this call. The files should neither be copied to the web server nor moved to it, a DMS (document management system) is not available.

Despite these technical constraints, it is possible to access the file system from a web server. In this article you will learn how to create a virtual directory for this on an IIS-based web server and link documents or folders in the file system. 

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Warning – web server required

The instructions only explain how to create a virtual directory under Microsoft's Internet Information Services (IIS), as we recommend these from viflow 8 onwards. If you haven't set up IIS before, read the following articles on installation and setup first:

  • ››› Providing the viflow WebModel with IIS (Internet Information Services)
  • ››› Installation of IIS (Internet Information Services) for viflow WebModels

Step 1 – Create user and generate UNC path

Create user and generate UNC path

  1. Create a user in Active Directory (AD).
  2. Give the user at least read rights for the directory on the file server that contains the documents to be linked.
  3. Create a network share for the user to generate a UNC path (eg: \\tstsrv22\Administrator\Desktop\transfer).
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Step 2 – Create Virtual Directory on "Internet Information Services (IIS)".

Create a virtual directory on "Internet Information Services (IIS)".

  1. Open Internet Information Services (IIS) Manager {{1}}.
    1. Right-click on a website (eg Default Web Site) and create a new directory using the Add Virtual Directory … {{2}} command.
    2. Under Alias enter the name that the virtual directory should have (eg Documents) {{3}}.
    3. Under Physical path enter the UNC link {{4}} that you created in point 3 of step 1.
    4. Now click on Connect as … and enter the data of the newly created user (step 1) {{5}}.
    5. Confirm with OK.
    6. Restart the IIS (e.g. open command prompt as administrator and run the command iisreset carry out).
    7. Finally, test the call via your browser (in this example: https://name-oder-ipadresse-des-servers/Documents/YourDocument.docx).
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Strep 3 – Calling up documents and integrating them into viflow

Calling up documents and integration into viflow

Accessing documents

The documents can now be accessed via http://SERVERNAME/FOLDERNAME/DOKUMENTNAME.

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Example of document call

Here the document readme.pdf can be reached via the path http://servername/foldername/readme.pdf {{1}}:

Integration into viflow

This path (http://SERVERNAME/FOLDERNAME/DOKUMENTNAME) is stored with the corresponding information {{2}} in viflow in the global properties in the Hyperlink {{3}} field.

Linking to folders in the virtual directory

You do not necessarily have to link to a document or file, it is also possible to open a folder in the virtual directory:

  1. Call up the virtual directory in your browser (here: http://servername/docs/).
  2. Find the folder you want to link to (here: TestFolder).
  3. Right-click to open the context menu and select Copy link address {{4}} 
    (note: the name of the menu item may differ depending on the browser used).
  4. Check the link by opening a new tab/window and pasting the copied address {{5}}.
  5. Now store the (previously checked!) link in the properties (field Hyperlink) {{6}} of the object in viflow.
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Access-protected call of documents

This article tells you how to allow web server access to the file server in Active Directory (AD) .
››› Access-protected call of documents on a file server via a web server (IIS).

All articles in WebModel

  • Use of the hosting service viflow cloud for your web model
  • Improve the performance of the WebModel
  • Deploying the viflow WebModel with IIS (Internet Information Services)
  • Installation of IIS (Internet Information Services) for viflow WebModels
  • Disable caching for viflow WebModels
  • Turn off the login dialog when opening the WebModel
  • Opening the WebModel via HTTPS
  • Operate viflow on Microsoft Azure
  • Open local viflow WebModel
  • Enable single sign-on (SSO) for different browsers
  • Error "HTTP Error 500.37 - ANCM Failed" when starting the WebModel
  • Error "HTTP Error 500.19" when starting the WebModel
  • Error "HTTP Error 500.30 - ANCM" when starting the WebModel
  • Processes are blocked by prohibition signs in the WebModel
  • Calling up documents on a file server via a web server (IIS)
  • Open local/external documents from the WebModel
  • Process Model cannot be exported as WebModel
  • Enable compatibility mode in WebModel – .NET 6.0
  • Open local viflow WebModel as preview
  • Replace WebModel manually on web server
  • Restrict access to WebModel directly on web server
  • Direct linking to specific processes in the WebModel
  • Adjust the name of the viflow WebModel
  • Azure AD connection for the WebModel on IIS
  • Administer WebModel – Set up permissions
  • Changing the viflow cloud password
  • Long loading time when calling up the WebModel
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