HI, I have Forefront 2010 for Exchange installed for an Exchange 2007 SP2 running on Windows 2003 x64 SP2. Exchange has all roles installed on the same server. 

When I try to save any change on Forefront I got the following message:

Microsoft Forefront 2010 for Exchange is unable to perform the requested function. This may be because Forefront services are unavailable. Ensure that all Microsoft Forefront services are running and that WindowsPower Shell is functional

Well, our FF services are running and PowerShell is functional. I checked some forums and found some problems when there is entries in the IP Allow / Block lists in Exchange UI. I removed those entries but problem remains.

Any ideas would be appreciated.

Xavier Villafuerte

Are there any related events in an event log?

In this case first of all I would recommend upgrading forefront to ForeFront 2010 for Exchange rollup pack 1, that is already available. Just: It will need a reboot...

• Marked as answer by Xavier Villafuerte Monday, May 09, 2011 11:15 PM
• Unmarked as answer by Xavier Villafuerte Monday, May 09, 2011 11:15 PM

Are there any related events in an event log?

In this case first of all I would recommend upgrading forefront to ForeFront 2010 for Exchange rollup pack 1, that is already available. Just: It will need a reboot...

• Marked as answer by Xavier Villafuerte Monday, May 09, 2011 11:15 PM
• Unmarked as answer by Xavier Villafuerte Monday, May 09, 2011 11:15 PM

We are experiencing the same issue.  What was the problem you identified with permissions on the Forefront directory, and what was the specific path?  (That is, was it located at c:\Program Files (x86)\Microsoft Forefront Protection for Exchange Server\ ?)

In my case, I was able to work around this issue by using  PowerShell directly.  For example, to run an on-demand scan for all mailboxes, this worked:

#open EMS
$aliases = (get-mailbox -result unlimited).alias
Add-PsSnapin FSSPSSnapin

set-FseOnDemandScan -MailboxList $aliases

Start-FseOnDemandScan -EnableVirusScan $true

• Windows 2008 R2 SP1
• Exchange 2010 SP3, RU9
• PowerShell 4.0 present on the machine (though EMS runs PS 2.0)

Forefront PowerShell cmdlets: https://technet.microsoft.com/en-us/library/cc482986.aspx