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In order This workaround allows you to access GL flash content beyond the year 2020 , you have to perform the following tasks.

Note: below's workaround is just one option by using the Firefox portable browser. Other options exists which are mentioned on external sources
example:

https://blogs.windows.com/msedgedev/2020/09/04/update-adobe-flash-end-support/

https://docs.microsoft.com/en-us/deployedge/edge-ie-mode

*********   Firefox Portable workaround ***********

• Download the Portable FireFox Webbrowser

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older GreenLight versions that use Flash content, after the stop of general browser support for Flash in 2020.

• Download the FireFox Portable Version incl. Flash

• Extract the ZIP file to any location

• Open the portable Firefox Browser by executing the Run FirefoxPortable.exe and access your greenLight GreenLight applicance  >> https://<gl appliance>/vimes/vimes.html
  
  

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In rare cases it is required that you need to uninstall the flash Flash plugin completely before you can use the portable workaround. Microsoft offers dedicated windows updates for this.
https://www.catalog.update.microsoft.com/search.aspx?q=4577586

Additional Information:

Note:Above's workaround is just one option by using the Firefox portable browser. Other options exists which are mentioned on external sources

https://blogs.windows.com/msedgedev/2020/09/04/update-adobe-flash-end-support/

https://docs.microsoft.com/en-us/deployedge/edge-ie-mode