Hello and welcome to Justanswer,my name is***** will be assisting you with your computer issue today.
Which is the operating system installed in the PC.Is it Windows Vista, Windows 7, windows 8, Windows 10 or any other?
Which is the web browser you are using is it Internet explorer, Mozilla Firefox, Chrome or any other
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Sir/Ma’am please answer my above questions so that i can help you better.
Checking to see whether you still need my help.
Please let me know.
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Please let me know, if you need any help and for the security certificate problem, you can check the date and time of your PC, if it is correct or not ?