Thank you for replying. I am using Norton Antivirus and have been using for 14 years.. Never faced this problem with the free version of CCleaner. I recently bought the professional version and this problem started.
For this post sake, I disabled Norton. But still same problem.
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Press<span> </span><code style="background-color:#f9f2f4;color:#c7254e;font-size:14.4px;padding:2px 4px;">Enter</code>.
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Right-click the program you don't want to open at startup and click<span> </span><span style="background-color:#f5f5f5;color:#333333;font-size:14.4px;padding:2px 4px;">Delete</span>.
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It's a pity I had to ask for a refund. I really loved this application.