Windows 10 How-To Guides is for write ups of prepackaged solutions regarding Desktop OS... Not for leading questions on issues not yet resolved regarding Windows Mobile OS.
already reset many times. Still no success.
one thing i wants to add here is that i went to microsoft care and tried to open store with their wifi and store opened without any problem. so now i am more confused that if my phone is fine then all wifi i had used were at fault? Or windows phone store only like to open with extra hi speed internet.
whatever is the cause , it is making me angry.