We have an environment setup and have been able to login to vSphere via domain accounts for months with no issue. All of a sudden this is no longer possible. The error says the username/password is incorrect but I know it is right. Veeam has also failed with an incorrect username/password error. I am able to sign in with the local admin account but this only gives me so much functionality. Its like vCenter has lost communication with our AD server or something... Im not very knowledgeable about VMware so Im at a loss as to where to even start.
Any help would be appreciated!