MBP keeps erasing sporadically wifi networks

be sure you have checked [√] Remember networks this computer has joined:

Velocifero wrote:

Well I really don't know how to fix this, the problem is not that the computer doesn't connect, but that from time to time it "forgets" the wifi networks previously connected to. I just had this issue two times now, but it does it out of the bloom. I turn on the computer like nothing and then it doesn't connect, when I go to the configurations there is only one network left, all the others have disappeared and have to connect to them and reintruduce the network and passwords all over again. If I go to the keychain manager there are no passwords saved either but in the icloud keychain there are some of the passwords along with the networks ssid's.

So far the only thing that I have done is just erase the wifi service restart and then start a "new" wifi service, but the only wifi network that the mbp lefts is still there so I don't know if it erase everything and started the wifi connections or if further down the line I will encounter this issues again.

see if there is anything here— see Bob Harris post:

https://discussions.apple.com/thread/254863233?answerId=259052611022#259052611022