As of yesterday, 7-29-19 as well as today, 7-30-19 when attempting to "log-out" of Norton services, i am noticing the following error:
What is annoying with this, when you get this, you are not really logged out. And, if i am not properly logged out of Safe Web - - then it interferes with my login process for Community Norton.
Okay. What i am noticing with this seemingly persistent problem, if i attempt to log-out OR log-in from any other page other than the community.norton.com Homepage:
I don't know if your issues are related, but if you're still having problems you might want to read mgiron's 05-Aug-2019 thread Page Not Found in 20.18.0.213 (I assume they meant v22.18.0.213).
See CatJones' recent 27-Jul-2019 thread 400 Bad Request at Norton.com Login. Guru bjm_'s suggestion <here> to purge the entire browser cache and history solved their problem.