"Invalid Credentials, Invalid username or password."

[suu]

Yesterday I signed into the Technic Pack just fine with my account by entering in it's username and password. Today I wanted to create some stuff just to find that it's apparently invalid according to both Mojang and Technic, which is a load of crap since it worked Yesterday.

Mojang isn't allowing my alt account to sign in either, which is also a load of crap, nor is Technic allowing my alt account. What on earth is going on here? 

[Melfice]

My first guess is that the validation servers are down. Try again later.
There is also the possibility that you may have entered the password wrong. We all have fat fingers sometimes. An "i" is easily replaced by a "u".

[gforcebreak]

i can confirm this is not a contained issue i changed my password several times and was unable to log in. even with the newest password sorry i couldn't add to solving it but i hope it helps frame the issue that it isn't just you misspelling your password.

[EDO0305]

me too

[Dragonsoul03]

YEA

[r3SeBy]

Same problem to me

[GamerG723]

sombody fix this