If Postyourlife.com (or its subdomain: https://9j0r.undefined.postyourlife.com/) site pops up on your browser with an offer to enable notifications then your system is infected with adware. If this happened to your computer, you likely have installed some questionable software contained hidden malware. Do not try to click on “Allow Notifications”, as it will enable notifications that will start littering your screen with third-party advertisements.
“Windows is not activated” is a scam message trying to trick users into believing that they need to activate Windows. This is done via a pop-up window that looks like a basic system information window. In no case should contact them because you may become a victim of fraud and lose your money.
Tchhelpdmn.xyz – is an ad-supported program that may throw users’ browsing experience into chaos. This one often gets on users’ computers together with other freeware and then starts opening Tchhelpdmn.xyz page and other ad sites. Also, it displays window offering to “Allow notifications”.
If your browser’s new tabs started to open http://glaibqajz871.host/9551/2264/lggeyl# page offering you to install Java update, you likely have adware installed. In fact, under the guise of this update is hidden another malware so you shouldn’t install it. In addition to constant redirects, a user also might encounter a lot of numerous pop-up advertisements overlaying web page’s content being viewed.
Mydealupdateliteflash.icu may come up on your browser and start redirecting you to ad sites. This often happens because of malware infection. This type of malware is classified as adware as its main purpose is to generate advertising revenue making users visit unwanted pages.