If you get this error while downloading a CF update, especially in CF2021, there’s a solution for that.
Just a quick note to clarify that if you may apply the new Java updates from Oct 18 2022 (such as Java 11.0.17) and change CF to use that, you will find (for now) that if you then try to download any CF updates using the CF Admin, the update will download but then you’ll get an error:
“error occurred while installing the update: Failed Signature Verification”
Here’s good news: there is a solution for that problem, actually a few alternatives you can consider, at least until Adobe resolves the problem for us. For more, see a blog post I did with much more detail:
The options are quite simple to implement, or I can help via remote consulting, of course.