@Mathias-Dreßke said,
Plugin Manager does not work in x64 version of NPP.
That’s not really the issue. There is a 64bit (x64) version of Plugin Manager as well as the 32bit (x86), and in Notepad++ versions 7.5.9 and earlier, it worked just fine for 64-bit architectures.
The issue is that starting with Notepad++ v7.6, the plugin hierarchy has been in a state of flux, as the NPP developer has been embedding his own Plugins Admin as a builtin alternative to the external Plugin Manager, and changing things as various issues come up. The Plugin Manager developer has not yet updated PM to be compatible with 7.6.x, because it’s too much of a moving target (and possibly because PM is likely no longer really needed for 7.6.x).
Most of the plugins don’t either.
There are a fair number of plugins that do have 64-bit versions. But yes, there are quite a lot that don’t, as well.
… I just put in there PluginManager.dll and now have Plugins Admin.
If you added PluginManager.dll to 7.6.2 in the plugins directory, then you have enabled the Plugin Manager. Plugins Admin is built into Notepad++, found under the Plugins > Plugins Admin… menu. If you try to use the Plugin Manager to install plugins in 7.6.2, they will not go to the right location, and Notepad++ will not notice that the plugins are there. You will want to use the Plugins Admin… to install your plugins in the correct location for v7.6.2.