I can only see this as an installer issue, not a workstation issue. The old 2015 versions installed without any hassle or problem. If its permissions, the permissions for those areas are unchanged from when I ran the old installations so not sure why now it would be a problem. Running as "Administrator" though should have solved it if it were that since Admin typically has end-all be-all permissions on the machine. The failure seems to happen in the last stages of installation (75%) as when any successful installation hits 80% it starts removing the old version so its definitely something in the post install section. Meh....release day consumer UAT I suppose...(FIX IT IN PRODUCTION!) Anyhow... Workaround for me (albeit a slightly ghetto solution) to get the installs to work finally was creating the following folders manually and re-running the installation. Once I did this, each of the installs completed without issue and the apps fired up without issue as well. Your experience may vary of course. If I cared more and this hadn't worked, I'd have done a close monitor of the install behavior to try and pinpoint the actual hangup but this sufficed and Adobe doesn't pay me to debug their software. If it weren't obvious by now, yes I work in IT. One might ask why I didn't do all this initially before posting here, simply answered, I try not to do work when I'm at home and I pay Adobe for this stuff to "just work" as most users would say. If this solution does work for you, please save your thanks, just send money 😃 Folders in bold were new. <usersdirectory> = The location of your "Users" folder, usually C:\Users, for some of us though, elsewhere. <username> = Your Windows username folder. Photoshop 2015.5 <usersdirectory> <username> AppData Roaming Adobe Adobe Photoshop CC 2015.5 Adobe Photoshop CC 2015.5 Settings Illustrator 2015.3 <usersdirectory> <username> AppData Roaming Adobe Adobe Illustrator 20.0.0 Adobe Illustrator 20 Settings Premiere Pro 2015.3 <usersdirectory> <username> AppData Roaming Adobe Premiere Pro 10.0 After Effects 2015.3 <usersdirectory> <username> AppData Roaming Adobe After Effects 13.8 Cache DVADialogPrefs MediaIO ModifiedWorkspaces OriginalUserWorkspaces Presets Character Animator Preview 4 Prelude 2015.4 <usersdirectory> <username> AppData Roaming Adobe Prelude 5.0 Muse 2015.2 <usersdirectory> <username> AppData Roaming com.adobe.AdobeMuseCC.2015.2 Adobe Adobe Muse CC 2015.2 Audition 2015.2 <usersdirectory> Public Documents AdobeInstalledCodecs (If installing Media Encoder first, this dir gets removed after a successful install and needs to be re-created to complete Audition installation) <username> AppData Roaming Adobe GPUSniffer 9.0 Audition 9.0 EffectPresets MediaIO Workspace Animate 2015.2 <usersdirectory> AppData Local Adobe Animate CC 2015.2 Roaming Adobe Animate 2015.2 Media Encoder 2015.3 <usersdirectory> Public Documents AdobeInstalledCodecs (If installing Audition, this dir gets removed after a successful install and needs to be re-created to complete Audition installation) <username> Documents Adobe Adobe Media Encoder 10.0 ArchivedWorkspaces SavedWorkspaces SyncBackup logs AppData Roaming Adobe Adobe Media Encoder 10.0
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