Cannot log in to the MySQL server (1 reply)

I'm unable to log into MySQL via PHPMyAdmin. My local wordpress installations
are not functioning.

My username is: ROOT
My password is: [blank]

PHPMyAdmin error is: "Cannot log in to the MySQL server"

MySQL console contains the following warnings from today:

2017-03-17T13:33:57.392931Z 0 [Warning] 'NO_AUTO_CREATE_USER' sql mode was not set.
2017-03-17T13:44:00.203386Z 0 [Warning] 'NO_AUTO_CREATE_USER' sql mode was not set.
2017-03-17T13:50:26.844281Z 0 [Warning] 'NO_AUTO_CREATE_USER' sql mode was not set.
2017-03-17T14:06:59.764498Z 0 [Warning] 'NO_AUTO_CREATE_USER' sql mode was not set.
2017-03-17T14:20:07.575788Z 0 [Warning] 'NO_AUTO_CREATE_USER' sql mode was not set.

Answers to questions:

1 - Windows version used (Specify version number AND whether 32 or 64 bit)
Windows 10 Home 64 bit
2 - Version WampServer (Specify version number AND whether 32 or 64 bit)
3.0.0
3 - Apache Version
2.4.17
4 - PHP Version
5.6.16
5 - MySQL Version
5.7.9
6 - What color is the WampServer icon (in the notification area of the taskbar)
Green

7 - In the file c:\Windows\System32\drivers\etc\hosts, what are the active lines with the name [localhost] in them?
* Active means no # at the beginning of the line.
0.0.0.1 mssplus.mcafee.com

Above that, these appear to have been commented out?

# localhost name resolution is handled within DNS itself.
# 127.0.0.1 localhost
# ::1 localhost

If the WampServer icon is green:

8 - Do you have access to localhost (Homepage WampServer)?
Yes
8a - If so, is there an error message at the bottom of the page?
No

9 - Do you have access to phpMyAdmin?
Yes

10 - If you refer to an error message, please include the EXACT wording of the error in your post
"Cannot log in to the MySQL server"

11 - If you use an Antivirus and / or Firewall, please include the names of these
McCafee Total Protection (turned off firewall - no help)

12 - What is the full path to the installation of WampServer (eg D:\wamp\)
C:\WAMP64

13 - If you have one or more Virtual Hosts defined, please show their definition(s)
I don't