• Adam Piggott

    Thank you very much for this entry – a customer’s Eset NOD32 anti-virus GUI had this same problem and I’d tried pretty much everything you had, but knew it was something Group Policy or restriction-related. Glad I found you on Google!

  • @Adam Piggott

    You are welcome. :) This is not that often used trick, took me a while to figure it out back then.

  • HaydenDLinder

    Just wanted to let you know, I was working with a customer who had this exact error when trying to launch MS Sec Essentials and your fix resolved it perfectly. Thank you very much for posting this.

  • adil

    thats guy…i was loosing my head over this!!!! fixed it right up….by the way…for other people…the registery file is under users, not local machine. but thanks again guy

  • Sajimonmm

    Regedit also isn’t working

  • @Sajimonmm

    I’d try copying and renaming regedit.exe or use third party registry utility.

  • Margot

    Thank you so much! It worked like a charm!

  • Leungzt

    Thanks man, you helped me a lot!!!

  • Daniela

    Thank you very much. This really worked!

  • AlexxSeven

    idk how long ago this post was but i have to say THANK YOU!! sooo much, of all the things i know this was not one, and a recent issue I’ve had too, i did the search in the registry for that hive and found it instantly. and just as you described it was full of the exe names for antivirus programs, (in my case eset) i deleted all the keys and restarted and instantly after everything was working like normal. again i have to thank you for this article, it has saved me hours of work.

  • This was exactly what I was looking for. Thanks for your research and write-up. I found out that something had also added all of the AVG executables to the same “do not run” registry key. Still not sure which one, but it’s working right now.

  • Diane

    I went to my registry:
    Regedit.exe HKEY_CURRENT_USER\Software\Microsoft\CurrentVersion\Polices\Explore:
    In the explorer folder is:
    Ab (Default) REG_SZ (value not set)
    HideSCAHealth REG_DWORD 0x00000001 (1)
    NoActiveDeskti…. REG_BINARY 00 00 00 00
    NoInstrumentati… REG_SZ 1
    NoSaveSettings REG_DWORD 0x00000000 (0)

    What do I leave in and what do I delete, is there suppose to be something? I’m afraid to erase everything. Appreciate your help.

  • @Diane

    Look for DisallowRun folder inside of Explorer one.

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