How to permanently keep patterns

[Guest]

There isn't any rhyme or reason to when patterns will disappear from the pattern panel. I'll have them for months, then poof! Gone!

How can I keep my patterns permanently without having to reload them? This seems like a huge glitch. 

[c.pfaffenbichler]

What have you done for trouble-shooting so far? 

https://helpx.adobe.com/photoshop/kb/basic-trouble-shooting-steps.html

Did you save your custom Patterns into the proper user-Presets-Folder? 

https://helpx.adobe.com/photoshop/kb/preference-file-names-locations-photoshop.html