Start and run WindowViewer
- Last UpdatedApr 09, 2025
- 4 minute read
This section explains about the behavior of WindowViewer in Operations Control connected experience.
Work with WindowViewer in Operations Control connected experience:
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Launch WindowViewer.
If you are launching WindowViewer for the first time on this node and no other Operations Control product was launched and authenticated on the same node before, then you are prompted to authenticate with AVEVA Identity Manager on a web browser or embedded browser (based on the choice that you have made while configuring Authentication tab in System Management Server of the Configurator). If you have already launched and authenticated WindowViewer on this node or launched and authenticated any other Operations Control product on the same node before, then you will be authenticated using Single Sign-On. For more information refer to Authenticate using AVEVA Identity Manager section.
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Enter your email address that is registered with an CONNECT account to sign in to AVEVA Identity Manager and the respective password.
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If authentication is not successful and if you had not signed in before, then WindowViewer will launch in demo mode.

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If authentication is not successful or you have cancelled the authentication, but you have successfully authenticated and logged in at least one time on that node before, then WindowViewer will launch in Read-Only* mode.
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If you close the embedded browser login page that was launched to authenticate with AVEVA Identity Manager, the authentication failure dialog will be displayed immediately.
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If you do not provide credentials or close the web browser that was launched to authenticate with AVEVA Identity Manager, the authentication failure dialog will be displayed after 3 minutes.

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If you get disconnected from AVEVA Identity Manager, the WindowViewer will run in Read-Only* mode.
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Once you signed in successfully, and if you have Edge or Supervisory subscription, WindowViewer shows the sign in information on the title bar.
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If you signed in successfully, but do not have Edge or Supervisory subscription, then
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It will open in demo mode, if application has 64 tags or less configured. It will not open in demo mode and will exit the WindowViewer, if application has more than 64 tags configured.
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When WindowViewer is running successfully, a check is made for a valid AVEVA Identity Manager and CONNECT refresh tokens. If only a valid AVEVA Identity Manager token is received, and AVEVA Identity Manager is disconnected from CONNECT, then:
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WindowViewer will run in read-only mode. No warning icon will be displayed. You have to use GetTokenConnectionstatus() function script to know the status of connection. You can use the scripting methods to configure graphics that represent user interfaces and their proper status. When there is a connection loss, the configured scripts will run, and the WindowViewer user will view the appropriate user interface associated with the current connection state. For more information on GetTokenConnectionstatus() script refer to the GetTokenConnectionStatus() function section of the AVEVA™ InTouch HMI Application Development Guide (ITBuild.pdf).
Note:
- In Operations Control connected experience, the Configure users and Change password options under File > Configure > WindowViewer > Window in WindowMaker will be disabled. These options are not applicable in Operations Control connected experience, and therefore you will not be allowed to configure these options in WindowMaker. They will be unchecked and disabled by default, and they cannot be used in WindowViewer.
- WindowViewer as a service will not use a subscription from CONNECT, and will use the traditional perpetual license.
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*Read-Only mode:
Read-Only refers to the inability of writing to the I/O tags, but you will still be able to write to memory tags. In Read-Only mode you can only view the screen and cannot make any changes. This helps you to run your application in WindowViewer even if the authentication is unsuccessful. This Read-Only mode is an implementation on the WindowViewer, and it is different from the usual commercially supported Read-Only mode. This Read-Only mode does not cater of the Read-Only enabling setting on the InTouch products and is not related to the Read-Only license.
WindowViewer runs in Read-Only mode if you had signed in before at least once and the subscription has not been expired yet with any of the following conditions:
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authentication is unsuccessful
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you do not want to authenticate
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network failure or timeouts
When the contract date for a subscription has ended, WindowViewer will run in demo mode.