Has your browser opened a pop-up claiming that an unknown system failure has occurred? If so, you have encountered Unknown System Failure Tech Support Scam. Like a bunch of similar scams, it has been developed by disreputable companies/bad people/cyber criminals to convince users that serious system errors have occurred and users have to take some action soon. Users are expected to dial the promoted telephone number. In this case, you should see 888-576-1517 promoted on a pop-up warning as a toll-free number. We cannot confirm that it is not a premium-rate telephone number, so you should not dial it by any means. In fact, it is not the only reason you should not do that. We understand that Unknown System Failure Tech Support Scam might look convincing, but users should know that the pop-up they see is fake even if they find that it is impossible to close it easily. Believe us; pop-ups shown by untrustworthy domains know nothing about your PC problems, so do not believe a single word you see. What you should do instead is to go get rid of Unknown System Failure Tech Support Scam. If you have entered/been redirected to a domain showing this fake pop-up, it will not show up on your screen again after you close your browser and do not let it restore the last browsing session. Unfortunately, it is not always enough to do that.
If your browser has displayed Error: Unknown System Failure, you have been, without a doubt, exposed to Unknown System Failure Tech Support Scam. As mentioned above, its main goal is to promote a certain telephone number and scare users into making a call, so it is not surprising that it displays a fake pop-up alert to users. Your system is fine, we can assure you, so there is no point in contacting the technical support. To be frank, it is very likely that cyber criminals rather than experienced technicians will pick up the phone if you make a call. We have not tried dialing the number promoted by Unknown System Failure Tech Support Scam, but our specialists are sure that it is a bad idea to do that because they might try to convince users that they need special software for fixing computer issues. Of course, they will not receive it for free. Also, cyber criminals associated with the tech-support scam might try to obtain personal details from users with the intention of selling them later. Last but not least, users might allow cyber criminals to connect to their PCs remotely without even realizing that. There is probably no need to say that this might result in a bunch of security and privacy-related problems.
Users usually encounter Unknown System Failure Tech Support Scam because they surf suspicious websites, click on bad links, and then are automatically redirected to a domain containing a fake alert. If you suspect that this has happened to you too, or you have visited an untrustworthy domain with a fake pop-up accidentally, you will no longer see it if you close your web browser and make sure it does not restore recently opened web pages. In some cases, the X button in the top-right corner of the web browser might be inactive, so you will have to kill the process of your browser. Unfortunately, it is not always enough to do that to get rid of Unknown System Failure Tech Support Scam. If you keep seeing these fake pop-up alerts periodically and they show up on your screen again soon after closing the web browser, it might be a sign that there is untrustworthy software, e.g. adware installed on the system. Its removal is a must in such a case, so we recommend scanning the system with an automatic malware remover if you believe that there is active malware on your PC. Of course, you can find it manually too, but this will require more time and effort.
Find instructions that will help you to get rid of Unknown System Failure Tech Support Scam by closing the web browser provided below this article; however, if a fake pop-up appears on your screen again, you should go to perform a system scan with an automatic scanner, such as SpyHunter, to find and erase all threats from your system. If undesirable software is really installed on your computer, you will no longer see fake alerts only if you clean your system.