Alex WordPress stuck in maintenance mode usually happens after an interrupted update. WordPress starts an update, creates a temporary maintenance file, and then fails to remove it when the process does not finish correctly. The good news is that this problem is usually easy to fix. In most cases, you can bring the site back in
431 Request Header Fields Too Large means the server refused the request because the HTTP request headers were too large. In real cases, this usually comes from oversized cookies, a bloated Referer, too many custom headers, or header limits that are too strict on the server or proxy. :contentReference[oaicite:1]{index=1} This is not usually a mystery
414 Request-URI Too Long appears when the server refuses a request because the URL is too long to process 414 Request-URI Too Long means the server refused the request because the URL was too long to process. In most cases the problem is not the page itself — it is the request format, the query
408 Request Timeout often appears when a request is too slow to reach the server or intermediary layers 408 Request Timeout means the server gave up waiting for the client to finish sending the request. In simple terms, the connection started, but the full request did not arrive in time. This is not always a
429 Too Many Requests means the server is rate-limiting traffic, not that the site is fully down 429 Too Many Requests means the server is refusing requests because too many were sent in a short period. The site may still be online, but it is rate-limiting you, your browser, a bot, a plugin, or an
ERR_SSL_KEY_USAGE_INCOMPATIBLE means the browser received a certificate whose key usage settings do not fit the way that certificate is being used for HTTPS. In most cases, the certificate is real and the hostname may even be correct, but the certificate extensions are wrong for modern TLS. This error is especially common on internal websites, self-signed
SSL_ERROR_BAD_CERT_DOMAIN appears when the certificate does not match the domain name in the address bar SSL_ERROR_BAD_CERT_DOMAIN means the website is presenting an SSL certificate that does not match the domain name you opened. In practice, the browser asked for one hostname, but the server responded with a certificate issued for a different one. This error
NET::ERR_CERT_DATE_INVALID means the certificate looks expired, not yet valid, or the device clock is wrong NET::ERR_CERT_DATE_INVALID means the browser thinks the website’s SSL certificate is outside its valid date range. In plain terms, the certificate looks expired, not yet valid, or the device checking it has the wrong date, time, or time zone. This error
The “Your connection is not private” warning means the browser cannot verify the website’s HTTPS certificate Your Connection Is Not Private means the browser cannot trust the website’s HTTPS certificate or the secure connection in front of it. The problem can come from the website’s server, or locally from your device, network, antivirus, VPN, or
ERR_CERT_COMMON_NAME_INVALID means the certificate does not match the hostname in the address bar ERR_CERT_COMMON_NAME_INVALID means the SSL certificate presented by the website does not match the hostname in the browser address bar. In simple terms, the browser asked for one domain, but the server replied with a certificate for a different name. This error is