Windows Security Log Event ID 4963

Operating Systems Windows 2008 R2 and 7
Windows 2012 R2 and 8.1
Windows 2016 and 10
Category
 • Subcategory
Uncategorized
 • Subcategory could not be determined
Type Success
Corresponding events
in Windows 2003
and before
 
Discussions on Event ID 4963
System - Audit IPsec Driver Subcategory
Event ID 4963

4963: IPsec dropped an inbound clear text packet that should have been secured

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I haven't been able to produce this event. Have you? If so, please start a discussion (see above) and post a sample along with any comments you may have! Don't forget to sanitize any private information.

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Examples of 4963

IPsec dropped an inbound clear text packet that should have been secured. This is usually due to the remote computer changing its IPsec policy without informing this computer. This could also be a spoofing attack attempt.

Remote Network Address: %1
Inbound SA SPI:  %2

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