
Methods to fix “This site is not secure” pop-up (error code DLG_FLAGS_SEC_CERT_CN_INVALID) However, if you are 100% sure that the error is a mistake, you should not hesitate and learn how to fix the DLG_FLAGS_SEC_CERT_CN_INVALID error. WARNING: The website you visiting might be maliciousīefore proceeding to the methods that can fix “This site is not secure” error, we want to warn that your browser might actually prevent you from malicious content.Ĭhrome users should especially pay attention to this error message because this browser is designed to stop users from accessing websites that might be used for phishing or other cyber crimes.

However, if you are an older OS user, you should not be surprised to see the error code DLG_FLAGS_SEC_CERT_CN_INVALID too. The issue is most likely to bother Windows 10 users. The error has been reported on Google Chrome, Mozilla Firefox, Microsoft Edge, Internet Explorer and Opera web browsers. The example of "This site is not secure" error. However, the problem is that this error message might show up when users try to access legit and safe sites that they were visiting on a daily basis. The major web browsers, such as Google Chrome or Mozilla Firefox, stop and warn users when they are about to enter a potentially harmful website.

In the technical language, this error is known under the name of DLG_FLAGS_SEC_CERT_CN_INVALID.

“This site is not secure” is a security alert that prevents users from accessing various websites.

Turn off “Warn about certificate address mismatch” feature 2 Methods to fix “This site is not secure” pop-up (error code DLG_FLAGS_SEC_CERT_CN_INVALID).1.1 WARNING: The website you visiting might be malicious.
