Please follow the below mentioned Steps
- Windows 7:
- Choose Start > All Programs > Accessories.
- Right-click Command Prompt and choose Run As Administrator.
- In the Command Prompt window, type sfc /SCANNOW and press Enter.
- When the system scan completes, type msiexec /unreg in the Command Prompt window and press Enter.
- Type msiexec /regserver in the Command Prompt window and press Enter.
- Reinstall your Adobe product.
but as stated in the header I am on Win 8, does this still work?
But unfortunately same result.
Any other suggestions?
I am not Adobe staff, just another user like yourself, but something I have tried in a similar situation, though not related to LR or another Adobe product, would be to re-install the original test version that you thought you’d uninstalled, and if that works, then uninstall that, again.
I also make it a practice of never running a registry cleaner, because I don’t trust them to know 100% what they’re doing. I’ve seen them propose to delete keys because there was a system variable like %AppData% in a file path that does resolve to something when used by the OS, but the registry cleaner isn’t sophisticated to know it’s a system variable and just thinks it’s a reference to a non-existent folder.
Adobe CC application downloads Lightroom installer to Windows temp folder. Locate it. You should look in C:\Users\<User>\AppData\Local\Temp (and subdirectories) for Adobe_Lightroom_x64.msi
Execute it and install LR as any usual Windows application.
Then launch Adobe CC application (Lightroom should be listed there with same failed installaion state). Retry installation. It should be successful now and Adobe CC should recognize that Lightroom is installed.
if this doesn't work i would recommend you to activate the hidden admin account of the windows and then try to install the
Lightroom in the admin account.
"Hidden admin account".
How is that done? Never came across that before.
Have you tried shutting down your computer and rebooting?