The best way to clear the browser cache is doing that by the browser. You can follow this article
, which could be helpful for such approach.
Another option is clearing the cache via the application on the user log out. You can examine this material for more details on how to clear the cache through ASP.NET:
If this does not help you, please get back with a simple project, that isolates the problem, so that I could reproduce it and provide a firm approach to resolve it.
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