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How do I unblock unintentionally blocked plugincontainer.exe?

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Since downloading Windows 10 on my Dell desktop, I keep getting updates notices pushing in from the bottom right of the screen. Each of these notices states "Unknown Application" or something like that. It then goes on to name the "unknown", which usually means nothing to me so I hit the 'allow' button, just in case it is required to run my computer.

Today, as I was loading up a program that I downloaded yesterday and it worked yesterday, one of those "unknowns" appeared and it read 'pluginscontainer.exe'. I blocked it unintentionally and since then, that program won't load. Each time I try, I get the message "Pluginscontainer.exe" tried to load but has been blocked.

Can anyone tell me please, how to unblock it? Oh! My security system is Panda but I can't find any way to track it down on Panda. Sincerely, Maxwellme.

Modified by Shawn

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The pluginscontainer.exe is required for running certain plugins in Firefox. You need to add a security exception that will allow the program to run.

If you blocking the program in Panda, perhaps this article and thread can help you:

If you blocked the program in the Windows Firewall, please refer to this article:

Did this help fix the issue? Please let us know.