Can't install plugins in Photoshop

[stefan.g]

When I go to Manage Plugins, I can see only grayed-out items. When I try to install a new plugin, I get an error "Could not install plugin. Error code -20". Re-installing Cretive Cloud did not help. This happens on a Mac Powerbook, Intel-based. On my Windows system it works fine. Help needed how to resolve this.

[kglad]

<moved from cc services>

[Ged_Traynor]

@kglad I can't see how this is a Photoshop issue, nothing in the screenshots suggest it's Photoshop related

[kglad]

@Ged_Traynor, the op's title: Can't install plugins in Photoshop

[Ged_Traynor]

Oops missed that bit 😁 still I think it's more of a Creative Cloud app issue rather than Photoshop

[Ged_Traynor]

@stefan.g  Have you tried signing out and signing back into the Creative Cloud app

[kglad]

@Ged_Traynor, i think you are correct.  this person is having a problem with their cc app.

that error code is a path issue with the plugin installer.

@stefan.g, are you trying to install "easy panel"?

and, no matter which plugin you're trying, if signing out/in (per @Ged_Traynor) doesn't help, reset the cc desktop app:

make sure it's in the foreground, then press:

Win: Ctrl + Alt + R
Mac: Cmd + Opt + R

if that fails, restart your computer and retry installing.

<moved back to cc services>

[stefan.g]

Neither of these helped - signing out/in, restart computer, reinstalling cc and ps, reseting the cc desktop app.

[kglad]

again, what plugin are you trying to install?

[stefan.g]

Easy Panel, but the problem is the same with ny other plugin I try to install from CC->Stock&Marketplace.

[kglad]

assuming your have win 8 or better, or mac 10.8 or better:

your default browser must support tls 1.2, https://helpx.adobe.com/x-productkb/multi/eol-tls-support.html

to test your default browser's tls you can use , https://clienttest.ssllabs.com:8443/ssltest/viewMyClient.html

[stefan.g]

Yes, my browser supports TLS 1.2 and 1.3. I suspect it could be some path/directory permission or not available issue, but I do not know which path it is supposed to access for the plugins.

[stefan.g · Accepted solution]

The problem was resolved by a clean reinstall of Mac OS and then CC and PS. Reisntalling just CC/PS was not sufficient.