Interesting… that didn’t work.
It was definitely the right file, I opened it and could see many server IP’s and ports. Clearly was being stored in there at one point. I did note that there were 30something servers listed.
Removed the file. Exited Steam just to be sure, started EGS and the history still shows all the same servers it did before (5 fairly recent servers).
Others and me did it couple of times before I decided to post it, so it works for sure but maybe check your setup:
Did you got your steam3ID right?
Did you have multiple Empyrion instances (e.g. to switch fast between EXP and Public version)?
Do you have the steam cloud enabled (since this is a feature of it)?
this issue has been plaguing me for 3yrs. tried this solution and many others with no resolve. gave up for a while and futilely tried again many times with no resolution. would look like it worked when i loaded the game but after restarting steam, the folder would repopulate. several “turning it off and on again” attempts with steam’s cloud sync and the window’s “feature” shadow copy. the friggin folder would always come back. even after uninstall, reinstall, and even a reinstall of windows.
one thing i did discover is that server connection history is tied in with steam’s gui and not within Empy itself (folder 7 is the steam server browser “app.”) for those that do not know, steam begun with one title and the mods for it, Half-Life. it was to replace the WON network for server browsing and connections outside of game. it became something much more over the decades. not every game is fully compatible with this feature and does not show in the list. empy is not listed so assumptions would dictate it is not compatible. however i have noticed many times in the past i could see the server i had just left loaded in the list as an unknown game. it would vanish after i hit refresh.
so i gave up until yesterday when @dew1960 asked me about this. after telling him my plight and seeing this resolved it for him i decided to crack into it again. after hours of doing everything i could possibly think of and lots of swearing i had a spark of idiocy. i started doing steps in different orders. low and behold i was able to finally remove the old servers and only see the ones i preferred. the key step i was missing was actually joining a server before closing the game. opening and closing the game and seeing no previous servers did not update connection history so the file was reverting every time. the “lastupdate” line in serverbrowser_hist.vdf is what clued me in to this. it was not changing until i actually joined a server
now i have no idea why this was required, my best guess is this game has “issues” reporting to the steam server browser. no surprises there though