Flash Player installation failed [OS X 10.11.6]

[bradw69239554]

Trying to install Adobe flash player on a mac 10.11.6.  I have used adobe uninstall program and removed my old version because of this error that appears during the install process.  That did not correct the problem and the trouble shooting tips on the website don't apply if the old product in not currently installed and the ones that do I have checked (password to allow download).  Any ideas?

[moderator: edited title to more accurately reflect issue being reported]

[_maria_]

Hi bradw69239554

We'll need to review the installation log files to troubleshoot further.  Please provide the following log files:

• FlashPlayerInstallManager.log saved at ~/Library/Logs
• Adobe_ADM.log and Adobe_GDE.log saved at ~/Library/Logs/Adobe_ADMLogs

If you need assistance locating the files, please see Where do I find the Flash Player installation log on the Macintosh?

Upload the files to cloud.acrobat.com/send using the instructions at How to share a file using Adobe Document Cloud and post the link to the uploaded files in your reply.

Thank you.

--

Maria

[bradw69239554]

Apr  4 19:04:07 Brads-MBP installer[1138]: JS: Flash Player Install: Performing volume check for /

Apr  4 19:04:07 Brads-MBP installer[1138]: JS: Flash Player Install: Volume check passed.

installer: Package name is Adobe Flash Player

installer: Certificate used to sign package is not trusted. Use -allowUntrusted to override.

2018-04-03 18:03:22 -0500   IM: [install failed: 1]

2018-04-03 18:03:22 -0500   IM: Install failed with error code: 1.

2018-04-03 18:03:22 -0500   IM: NPAPI 29.0.0.113 ---------- log end ----------

2018-04-04 19:03:57 -0500   IM: NPAPI 29.0.0.113 ---------- log start ----------

2018-04-04 19:03:57 -0500   VM: All install checks pass

2018-04-04 19:03:57 -0500   IM: You may need to restart your browser to use this version of Flash Player.

2018-04-04 19:03:57 -0500   IM: [install started]

2018-04-04 19:04:07 -0500   RA:

Attributes for '/var/folders/82/3lxbrs8j0zd4knj2cwdpylxr0000gn/T/FPInstallHelper':

{

    NSFileCreationDate = "2018-02-24 02:25:54 +0000";

   NSFileExtensionHidden = 0;

   NSFileGroupOwnerAccountID = 0;

   NSFileGroupOwnerAccountName = wheel;

   NSFileHFSCreatorCode = 0;

    NSFileHFSTypeCode = 0;

   NSFileModificationDate = "2018-02-24 02:25:54 +0000";

    NSFileOwnerAccountID = 0;

   NSFileOwnerAccountName = root;

   NSFilePosixPermissions = 2541;

   NSFileReferenceCount = 1;

    NSFileSize = 46800;

   NSFileSystemFileNumber = 9506459;

    NSFileSystemNumber = 16777220;

    NSFileType = NSFileTypeRegular;

}

2018-04-04 19:04:07 -0500   RA:

Attributes for '/var/folders/82/3lxbrs8j0zd4knj2cwdpylxr0000gn/T':

{

    NSFileCreationDate = "2001-01-08 04:25:58 +0000";

   NSFileExtensionHidden = 0;

   NSFileGroupOwnerAccountID = 20;

   NSFileGroupOwnerAccountName = staff;

   NSFileModificationDate = "2018-04-05 00:03:57 +0000";

   NSFileOwnerAccountID = 501;

   NSFileOwnerAccountName = bradwardyn;

   NSFilePosixPermissions = 448;

   NSFileReferenceCount = 39;

    NSFileSize = 1326;

   NSFileSystemFileNumber = 474883;

    NSFileSystemNumber = 16777220;

    NSFileType = NSFileTypeDirectory;

}

installer: Package name is Adobe Flash Player

installer: Certificate used to sign package is not trusted. Use -allowUntrusted to override.

2018-04-04 19:04:07 -0500   IM: [install failed: 1]

2018-04-04 19:04:07 -0500   IM: Install failed with error code: 1.

2018-04-04 19:04:07 -0500   IM: NPAPI 29.0.0.113 ---------- log end ----------

[_maria_]

Thank you very much for posting the log file contents.  The failure is due to:

installer: Certificate used to sign package is not trusted. Use -allowUntrusted to override.

'installer' is an application included in OS X that extracts and installs software packages.  This app is returning the error, not Flash Player, This error indicates a certificate issue on the system, not Flash Player installer itself.  See https://forums.adobe.com/thread/1651963 and https://forums.adobe.com/thread/2424957 for assistance.

--

Maria