Hello, All! Lately I have found in the eventlog strage sequence of approx. 50 errors. Another fact is that they were ocured in one second! Reading Firewall, PacketFilter and WebProxy logs havn't made things clear. Eventid.net has no information on the error. What could it be? I have ISA SP1 with DMZ in integrated mode, cache size 200Mb, ~30 clients Thanks in advance. Andrei. Event Type: Error Event Source: Microsoft Web Proxy Event Category: None Event ID: 14197 Date: 6/4/2002 Time: 9:48:10 User: N/A Computer: ALPHA Description: ISA Server failed to write content to cache file. The error code in the Data area of the event properties indicates the cause of the failure. Data: 0000: 05 40 00 80 .@.?