An error message that starts with "svchost.exe has encountered a problem and needs to close" might actually be a fake warning from a rogue anti-malware program. Usually, fake antivirus programs or Trojans display such warnings in order to scare you into thinking that your computer is either infected with malware or has many serious security and privacy problems or other errors. So, how can you tell whether it's fake or not? The legitimate one has the "Don't Send" button whereas the fake provides "Fix it" button. That's the only difference.
The fake svchost.exe reads:
"svchost.exe has encountered a problem and needs to close. We are sorry for the inconvenience.
If you were in the middle of something, the information you were working on might be lost.
Please tell Microsoft about this problem.
We have created an error report that you can send to us. We will treat this report as confidential and anonymous."
If you click the "Fix it", you will be promoted to download or install fake anti-virus program or you will be redirected to a misleading website that promotes rogue programs. One way or another, you should download/install/purchase anything, especially from bogus websites.
If you find that your computer is infected with malware that displays this fake warning, then you should scan your computer with legitimate anti-malware software. You can choose a program from the following list:
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