A file system error occurred while opening or writing to the system message log file filename. Message logging has been switched off due to the error. The error code is the data.
Any action to correct the problem should be performed on that computer. An error occurred when the Messenger service tried to access the message log, so message logging has stopped. The error may have been caused by a full disk, a disk error, the file being locked by another process, or any other situation that would cause an error while writing to a file.
If the disk is full, free space on it by deleting unnecessary files and directories. Then check that the message log file is accessible, and start message logging by typing NET LOG /ON.