Hi, Java 8 u 261 breaks with the current version of Freenet. There's an update on the way to fix this issue. As a workaround in the meantime you can uninstall the update until the release is out.
Here are two articles showing the steps to install a previous Java update: - https://support.planwithvoyant.com/hc/en-us/articles/209725073-Install-or-revert-to-a-prior-version-of-Java-Windows - https://support.quotemedia.com/support/solutions/articles/13000055272-how-to-downgrade-java-version-windows-user- These articles are illustrative on the steps to take. The version mentioned may be outdated. Best regards,