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Questions about Clearing Java Applet Cache on Multiple User Desktops (Doc ID 2678317.1)

Last updated on APRIL 16, 2021

Applies to:

Java SE JDK and JRE - Version 8 to 8
Information in this document applies to any platform.


The certificates for signed applets periodically expire. This results in numerous users getting expired certificate warnings and errors when browsing web pages with those signed applets. The certificate warnings can persist in the Java Applet Cache after the certificate has been updated,  and the cache needs to be cleared to resolve the problem.  What options exist to update the cache on all desktop systems before rolling out a new release with an updated certificate? Specifically:

1. Is there a setting in JRE to clear java cache on all desktops on a periodic basis?
2. Is there a setting in JRE to expire/timeout the cache? Is it configurable?
3. Is the cache permanent?
4. At what intervals does JRE clear the cache?


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