Event ID - 20

Event Id20
SourcePrint
DescriptionPrinter Driver [printer driver name] was added or updated. Files: [list of updated files]
Event InformationAccording to Microsoft:
CAUSE:
These events are logged when a Terminal Services client with a local printer attached connects to a server. The server loads the drivers for the clients local printer to enable the client to print to its local printer from within the client session.
RESOLUTION:
To resolve this issue, adjust the Event log settings or turn off these informational events.
To Adjust the Event log Settings
1. Click Start, point to Settings, and then click Control Panel.
2. Double-click Administrative Tools, and then double-click Event Viewer.
3. Right-click the System Log file, and then click Properties.
4. Click Overwrite as needed, or set a larger maximum log file size.
5. Click OK.
To Turn Off Informational Events
1. Go into your printer folder, and then click File.
2. Click Server Properties.
3. Click the Advanced tab.
4. The spooler events can then be turned off.
Reference LinksEvent Log Fills with Printer Creation/Deletion Notifications

System Event 20 Logged When Printing with SNA Print Server

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