How to fix NET::ERR_CERT_DATE_INVALID error?

by Ugnius Kiguolis - -
12

Question

Issue: How to fix NET::ERR_CERT_DATE_INVALID error?

I hope you can help me. There’s this NET::ERR_CERT_DATE_INVALID pop-up page that keeps bothering me for a while now which claims that my computer is at risk and I need to call some tech support number for the experts to take a look in this issue. The funny thing is that i only see this error while on my browser and the PC diagnostics do not indicate any security problems. What else could be causing this error? It is even legitimate?

Solved Answer

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NET::ERR_CERT_DATE_INVALID is a fake error page that typically shows up on the computers after they are infected with some malicious adware. An important thing to note is that this virus falls under the category of Tech Support Scams because it imitates a system error and offers the unsuspecting users to provide some technical help in order to fix it. This scam is also known as “Your connection is not safe” virus. Coincidentally or not, these are the words the users first see when infected with this malware. Here is a sample of this bogus message:

Your connection is not safe
Attackers might be trying to steal your information from www.yourcomputerdata.com (for example, passwords, messages, or credit cards) NET::ERR_CERT_DATE_INVALID
Attackers hack your data from overseas countries
Call immediately to secure your connection: 0800-090-3286 (Toll Free)
Please call us immediately at: 0800-090-3286 (Toll free)
If you close this page, your computer access will be disabled to prevent further damage to our network.
Hide advanced / Reload

As you can probably suspect, the toll free number which the victims are urged to dial does not connect to any technician. Instead, the users are put through to some scammer that tries to sell them some questionable and potentially malicious software, or gain remote access of their computers and use it to extract some sensitive data, logins, banking credentials etc., or install some spying malware which would proceed to collect data even when the remote connection is terminated and the virus itself is removed from the device. So, in a sense, seeing the fake NET::ERR_CERT_DATE_INVALID error on your browser actually means that you might be on the verge of some privacy infringement if you do not take action soon. You should stay collected and refrain from calling the indicated number. Then, you may check out some recommendations which you may use to remove NET::ERR_CERT_DATE_INVALID from your computer without putting it at risk of even more damage.

How to fix NET::ERR_CERT_DATE_INVALID error?

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As we have pointed out before, NET::ERR_CERT_DATE_INVALID errors are often caused by adware. So, your first step should be a close system investigation for potentially unwanted programs. We recommend doing that with some reputable anti-malware application such as Reimage. If you can’t use automatic tools to scan your system, make sure you go through all of the following steps:

  • Run your Task Manager and click End Task next to the unfamiliar processes (be careful not to terminate system processes — research the purpose of the process beforehand!)
  • Go to the Programs and Features catalogue (Add/Remove Programs on Windows 8 and earlier) and look for unfamiliar applications that you may not have have installed yourself and delete them.
  • Use programs such as Reimage or MacKeeper to clean up the system registry
  • Go through your web browsers and check them for shady extensions. Remove unwanted components if you detect any and reset the browser.

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About the author

Ugnius Kiguolis
Ugnius Kiguolis - The problem solver

Ugnius Kiguolis is the founder and editor-in-chief of UGetFix. He is a professional security specialist and malware analyst who has been working in IT industry for over 20 years.

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