failed to download server information. restart launcher please.

hello Gms and staffs.
i have been playing cabal for almost a year now and this is the first time it happened.
everytime I opened my cabal launcher it says failed to download server information. restart launcher please.
And sometime says " Downloadinf essential components"
i have done everything, i uninstalled my cabal and reinstalled it still not working.
i turned off my Norton anti virus. still not working .

can someone please help me how to solove this problem?