> [CASE:3855442] was created It seems that sources of `URL*` related features are not initialized properly which leads to problems in many cases. Please follow those steps to reproduce the problem: - Let's deploy a test api: api = First @ CloudDeploy @ APIFunction[ {} , HTTPResponse["", <|"Content" -> "TEST", "StatusCode" -> 404|>] & ] - Check: URLRead[api] > [![enter image description here][1]][1] So far so good - Copy `api` url string and try URLRead["https://www.wolframcloud.com/objects/...."] Should return 404, nothing unexpected. - Now `Quit[]` the Kernel and run the manual check again: URLRead["https://www.wolframcloud.com/objects/...."] > [![enter image description here][2]][2] What? I agree that returning 404 this way may not be the best idea but I expect at least consistent results. What is more interesting, deploy another `api` and run manual test for the **old url**, now it works again... How to classify this feature? What to call to have stuff initialized/loaded properly? [1]: https://i.sstatic.net/RffJMm.png [2]: https://i.sstatic.net/pdz6km.png