Files larger than 512MB are not served from cache after ISA Server firewall service is restarted

Do you really know what is and what is not supported on ISA Server?

Yuri Diogenes's Blog — Wed, 30 Jul 2008 17:09:14 GMT

Last two months for some reason were pretty busy of calls for ISA Server issues where customers were

paulo.oliveira — Wed, 06 Aug 2008 17:14:13 GMT

So, we can say that the erros "ISA Server was unable to write content to the cache file." is related to it?

isablog — Mon, 11 Aug 2008 21:10:08 GMT

Hi Paulo,

We can't really say that. Notice (Stage 1) that we can serve large files, but they will not be retrieve in case Firewall Service restarts.

This error that you are mention is common in the following situations:

1. The file is locked - which is the most likely reason as the failure only happens periodically

2. The file size and partition space allowed gets full but then the failure would be consistent

3. Permissions changed but then the error would be different

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