During a read workflow you cannot read a device in and you see the following error in the logs
Read: Byte array for GUID must be exactly 16 bytes long
One of the binary values (we are expecting to contain a GUID) contains something different.
You need to review the computer object and look at the following attributes. One of these values should be a guid but isn't and its preventing it being read in. This attribute needs to be cleared or updated to a guid.