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Comments for event ID 512 currently in the processing queue.

Note: We have not reviewed this information yet so it is unfiltered, exactly how it was submitted by our contributors.

Event ID: 512
Event Source: MIMESweeper for SMTP
Event Type: Error
Event Description: SMTP Command failed while talking to "mail.Server":<<< MAIL FROM:<user e-mail address>: >>> 500 Firewall Error
Event ID: 512
Event Source: codemeter runtime server
Event Type: Information
Event Description: The description for Event ID ( 512 ) in Source ( CodeMeter Runtime Server ) cannot be found. The local computer may not have the necessary registry information or message DLL files to display messages from a remote computer. You may be able to use the /AUXSOURCE= flag to retrieve this description see Help and Support for details. The following information is part of the event: The event log file is corrupt..
Comment: Seems to cause or contribute to a complete system crash.
Event ID: 512
Event Source: Store-Licensing
Event Type: Error
Event Description: Windows store failed to sync machine licenses. Result code 0x80070002
event id: 512 event source: printservice event type: error event description: initializeprintprovider failed for provider inetpp.dll. this can occur because of system instability or a lack of system resources. comment: this in on windows 7 sp1 x64 with installed oki lpr line printer utility. i consider the information provided by arthur xie quite helpful see

in case sfc reports a corrupt inetpp.dll but fails to repair it:

if your system is not connected to the internet check this_

my google search also revealed other potential causes:
tap driver causes printer error on windows 7 x64

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