Login problem on website.

Hello everyone, i'm using Mymuweb 0.8 yestrday happened this: nobody can log in on their accounts on the website.. it was working perfectly before i made update to my Computer and happened this.. MD5 is disabled, my server is not using md5. when i type Account Name and Password and than i Click Log in, happens nothing, no result. I tried to install muweb 0.8, same problem here, on muweb 0.8 i can log in but then access denied for everything. Please help me how to fix this problem, i don't want to close my server becouse of this problem. thank you all!
Here is my website for test account:
user: test
Password: avoe123

do u install it?
localhost/insall/install.php

astig01998 I'm not that kind of noob to forget installing core.
linda1990 In my config.php MD5 is off

I tried re-installing core but same problem causing to any Mu web core.

muweb 0.8 its problematic use 0.9
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what web use now?

muweb 0.9 or core has no problem. .
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