My PDC has been throwing up errors with Event ID 486, 454 & 413. These three errors occur in sequence every couple of minutes. Most of what I have found indicate that this is a problem relating to an Exchange database. However, this server is my PDC and is not running Exchange.
Here is more information relating to Event ID 486:
Log Name: Application
Date: 9/3/2014 9:07:58 AM
Event ID: 486
Task Category: General
taskhostex (7392) WebCacheLocal: An attempt to move the file "C:\Users\visionadmin\AppData\Local\Microsoft\Windows\WebCache\V01tmp.log" to "C:\Users\visionadmin\AppData\Local\Microsoft\Windows\WebCache\V01.log" failed with system error 5 (0x00000005): "Access is denied. ". The move file operation will fail with error -1032 (0xfffffbf8).