• Login
    • Search
    • Categories
    • Recent
    • Tags
    • Users
    • Groups
    • Rules
    • Help

    Do more on the web, with a fast and secure browser!

    Download Opera browser with:

    • built-in ad blocker
    • battery saver
    • free VPN
    Download Opera

    Not a Valid win32 Application Error

    Opera for Windows
    2
    4
    459
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • J
      jim73 last edited by

      I deleted my copy of Opera by mistake with IO bit uninstaller.

      When I try to reinstall any version of Opera for windows (online and offline versions) the installer comes back with the above error.

      I have followed many of the online help screens using Command Prompt, but my disk scans as OK.

      Does anyone have any other ideas, as I can install and run other browsers (Brave and Firefox for example) without any errors.

      I am running Windows 11 (version 24H2 OS Build 26100.8894) on a desktop i7 computer.)

      Thanking you in advance

      Reply Quote 0
        1 Reply Last reply
      • burnout426
        burnout426 Volunteer last edited by

        What anti-virus software are you using?

        Reply Quote 0
          J 1 Reply Last reply
        • J
          jim73 @burnout426 last edited by

          Thank you for your reply

          The only extra anti-virus software installed on the computer is the inbuilt "anti-virus" software in IO bit advanced system care, and that is turned off.

          I rely on windows defender.

          After double checking these, I tried again to re-install Opera for computers, with windows option, and got the same result.

          I looked to where the install file was placed (users/appdata/temp) and run the .exe file from there, this time it installed, and is now back working again.

          Thank you again for your reply

          Reply Quote 1
            burnout426 1 Reply Last reply
          • burnout426
            burnout426 Volunteer @jim73 last edited by

            @jim73 Glad you at least got things installed. You shouldn’t have to do it that way of course.

            As for IOBit, even though the antivirus part is disabled, you might have to temporarily uninstall IOBit to completely rule it out as the culprit.

            Reply Quote 0
              1 Reply Last reply
            • First post
              Last post

            Computer browsers

            • Opera for Windows
            • Opera for Mac
            • Opera for Linux
            • Opera beta version
            • Opera USB

            Mobile browsers

            • Opera for Android
            • Opera Mini
            • Opera Touch
            • Opera for basic phones

            • Add-ons
            • Opera account
            • Wallpapers
            • Opera Ads

            • Help & support
            • Opera blogs
            • Opera forums
            • Dev.Opera

            • Security
            • Privacy
            • Cookies Policy
            • EULA
            • Terms of Service

            • About Opera
            • Press info
            • Jobs
            • Investors
            • Become a partner
            • Contact us

            Follow Opera

            • Opera - Facebook
            • Opera - Twitter
            • Opera - YouTube
            • Opera - LinkedIn
            • Opera - Instagram

            © Opera Software 1995-