Recent Blog ArticlesNewest TopicsMost LikesTagged:TagObject identifier does not represent a valid object IIS Manager may display this error while starting a website: “The object identifier does not represent a valid object” DefaultAzureCredential failed to retrieve a token If you try to retrieve a value from Azure Key Vault, you may run into this error: “DefaultAzureCredential failed to retrieve a token from the included credentials” Connection closed by remote host You may run into this error message when you try to connect an FTP site in Command Prompt: “Connection closed by remote host” Status Code 400.0.64 Code 64 refers to “The specified network name is no longer available” Invalid Content-Length “Invalid Content-Length” and “Server sends too much data” errors Cannot use prefix with empty namespace URI This error message may show up if you try to change an IIS setting: There was an error while performing this operation. Details: Exception from HRESULT: 0xC00CEF03 Kernel-mode and user-mode caching After enabling output caching (refers to both kernel-mode and user-mode) in IIS, you may want to make sure resources are cached as expected WCF service doesn’t accept files over 64 KB While trying to upload files that are bigger than 64 KB, we came across this error: 413 Request Entity Too Large. The maximum message size quota for incoming messages (65536) has been exceeded...Event ID 2269 (HTTP.SYS communication error) The worker process for app pool 'DefaultAppPool' failed to initialize the http.sys communication BREACH vulnerability BREACH attack works by trying to guess the secret keys in a compressed and encrypted response