Really Jacob?? This was your cut & paste answer from somewhere else here after 4 years? You don't even understand the issue that is/was going on here. Is Cisco giving out points or something for "helpful" post upvotes? Ridiculous.
Downgrading to earlier firmware doesn't solve the issue. Appears to be the 1-1-2020 credentials expiration bug. https://www.cisco.com/c/en/us/support/docs/security-vpn/public-key-infrastructure-pki/215118-ios-self-signed-certificate-expiration-o.htm...
Spent some time trying to pin this down; tried a few things - formatted flash with clean IOS install (verified SHA to rule out corruption), tried older version... all with same error. Then I found a thread discussing this same 404 error/issue in reg...
Having the same issue with some 3602i's that I converted to standalone also w/153-3.JF11. Can access all settings pages through the GUI, but when you change anything apply and click "OK" in the pop-up warning box, it displays "404 not found" in the...