OS Error 201 appears in MariaDB log

Migrated from MariaDB to 10.1.26 to 10.2.7 on one of our Windows 2008 R1 (32bit) platforms.
we see a number of errors logged in the mariaDB log file.
Functionality wise; all seems fine.

There are two types of errors logged
1) Problem
2017-08-17 7:10:13 5064 [ERROR] InnoDB: Operating system error number 1 in a file operation.
2017-08-17 7:10:13 5064 [Note] InnoDB: Some operating system error numbers are described at http://dev.mysql.com/doc/refman/5.7/en/operating-system-error-codes.html
2017-08-17 7:10:13 5064 [ERROR] InnoDB: File \\.\D:: 'DeviceIoControl(IOCTL_STORAGE_QUERY_PROPERTY)' returned OS error 201.

2) when clients connect from MySQL workbench and disconnect cleanly; and also when I connect with Hibernate through our application; get following logged
2017-08-17 7:16:53 3944 [Warning] Aborted connection 18 to db: 'datafactorydb' user: 'rjis' host: '127.0.0.1' (Got an error reading communication packets)
2017-08-17 7:17:07 3944 [Warning] Aborted connection 19 to db: '*****' user: '**' host: '127.0.0.1' (Got an error reading communication packet.

both problems do not seem to break anything; the DB seems to function fine.

As soon as I go back to 10.1.26; all is ok; there is no network or hardware issues; these problems only appear when on version 10.2.*

These problems appear also with 10.2.5 and 10.2.6;
I also get this problem on all my other Windows 2008 R1 32bit servers I have tried to migrate to 10.2 on; even with a fresh install.

Is this a bug; is it because INNODB is running version 5.7.18 and not 5.7.19?

My my.ini is pretty standard; no major changes from the default for a server configuration.

Any ideas \ help please?