The most probable reason
Internet Explorer Critical ERROR warnings are popping up is because of an adware infection. You ought to never trust these types of warnings, everything they claim is false, unless the issue is entirely unconnected. Adware may create very intrusive ads so expect the adverts to regularly interfere with your browsing. An adware is often added to freeware, and if it's not unmarked, it will install alongside the software. The adverts are not dangerous, and as long as you do not fall for the scam, your PC isn't going to be jeopardized. If you did call them, you would have to deal with professional scammers who would ask for authorization to remotely connect to your PC, do some unneeded fixing, and then charge money, essentially for nothing. Authorizing some suspicious technicians remote access to your operating system can turn out badly, so be careful. You can be calm that this contamination indicated in the alert it isn't real, and that your machine is safe. The ads will only stop appearing if you terminate Internet Explorer Critical ERROR, so you should do that as quickly as possible.
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