It's not either of those things. There's no AV on this box and it's brand new server so the likelihood that the drives are going bad is low. Nothing indicated as such in any of the logs either. -----Original Message----- From: isapros-bounce@xxxxxxxxxxxxx [mailto:isapros-bounce@xxxxxxxxxxxxx] On Behalf Of Jim Harrison Sent: Tuesday, July 10, 2007 12:54 PM To: isapros@xxxxxxxxxxxxx Subject: [isapros] Re: Cache Error The most common cause of this failure is a file-based AV product that hasn't been told to ignore the ISA cache folder. Short of that, start looking in the system event log for disk errors. -----Original Message----- From: isapros-bounce@xxxxxxxxxxxxx [mailto:isapros-bounce@xxxxxxxxxxxxx] On Behalf Of Amy Babinchak Sent: Tuesday, July 10, 2007 9:52 AM To: isapros@xxxxxxxxxxxxx Subject: [isapros] Cache Error : ISA Server was unable to write content to the cache file. The failure is due to error: Unspecified error I'm getting this error every couple of days on an ISA 2006 server. I didn't find anything in the KB. Anyone point me toward the solution? Thanks, Amy -- ExchangeDefender Message Security: Click below to verify authenticity http://www.exchangedefender.com/verify.asp?id=l6AGg8eR029622&from=amy@ha rborcomputerservices.net All mail to and from this domain is GFI-scanned. -- ExchangeDefender Message Security: Click below to verify authenticity http://www.exchangedefender.com/verify.asp?id=l6BHhhcO023334&from=amy@xxxxxxxxxxxxxxxxxxxxxxxxxx