FAQ 004411 EN

Helpful Questions & Answers

  • Frequently Asked Questions (FAQs)

How can I reactivate an expired trial license of RWIND Simulation on a single-user computer?


The RWIND Simulation program is protected against unauthorized use. Before you buy the program, you can use a limited trial license to test all program features before the purchase. After this trial period, the program switches to a limited demo mode and deactivates the function to activate a new trial license. If you indicate a justified reason, the program can be authorized again with a temporary trial license via the e-mail activation.

For this, proceed as follows:

  1. Run RWIND Simulation "As Administrator." To do this, right-click the RWIND Simulation icon and select "Run As Administrator."

    Figure 01 - Program Start
  2. Click the "Activate Now" button to confirm the authorization check.

    Figure 02 - Authorization Check
    Then, the "RWIND Simulation 1.xx Demo Authorization Status" dialog box appears.

  3. In the "RWIND Simulation 1.xx Demo Authorization Status" dialog box, select the "Software Key" option in the Authorization Method area and click the "Activation via E-Mail" function in the lower part.

    Figure 03 - E-mail Activation
    This opens the "Activation by E-Mail" dialog box.

  4. In the "Activation by E-Mail" dialog box, enter the license number 1111 as well as the name and address of your institution under License Information.
    Furthermore, enter a user-defined description of the workstation to be activated under "Description of Workspace" and the RWIND Simulation level with an expiry date of the activation to be carried out under "Required Authorization."
    Then, click the "Generate Request Code" button to confirm your entries.

    Figure 04 - Generating Request Codes
    The "RWIND Simulation 1.xx Demo" dialog box appears.

  5. Check the data entered in the "RWIND Simulation 1.xx Demo" dialog box. If they comply, click "OK" to confirm the dialog box.

    Figure 05 - Checking Entries
    This opens the "Activation by E-Mail" dialog box.

  6. The "Activation by E-Mail" dialog box consists of three parts. In the "Step 2" tab, the required request code is displayed on the left. Copy this text block to the Windows clipboard by clicking the "Copy Request Code" button and then paste the code into a blank e‑mail with [Ctrl]+[V] or the Windows paste function. Send this e-mail to support@dlubal.com with the justified reason for a new trial period for further processing.

    Figure 06 - Sending Request Code
  7. You will receive an activation code from us. In the dialog box, go to the "Step 3" tab and enter this code in the "Activation Code" text box.
    Then, click the "Activate Now" button to run the activation process.

    Figure 07 - Program Activation

After the successful authorization, you receive a confirmation message and can test the program for the specified trial period without any restrictions. After the expiration of the trial period, the program automatically switches to the limited demo mode.


Student license Software test Softlock Dongle Authorization Expired Extend


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  • Updated 5 April 2021

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Compatible Programs RWIND Simulation
RWIND Simulation 1.xx

Stand-Alone Program

Stand-alone program for numerical simulations of wind flow around buildings or any other objects. The generated wind loads acting on these objects can be imported into RFEM / RSTAB programs for static and dynamic analysis.

Price of First License
2,690.00 USD