Q:  Hi. If you purchase ISA Standard, can you upgrade to ISA Enterprise?  If so, how? Please advise as soon as possible. Thanks...

A:  Yes, there is, via Export/Import.

Upgrading from ISA Server 2004 Standard Edition The upgrade process from ISA Server 2004 Standard Edition involves these steps:

1. Export the ISA Server 2004 Standard Edition configuration. For instructions, see ISA Server 2004 Standard Edition Help.

2. Install the Configuration Storage server component of ISA Server 2004 Enterprise Edition.

3. Install one array member (either on the Configuration Storage server or on a separate computer).

4. Import the configuration file that you exported in step 1 to the array you created in step 3.

5. Install ISA Server array members.  The array must have only one member server when you import the configuration information.

Pasted from <http://www.microsoft.com/technet/prodtechnol/isa/2004/isa2kexport.mspx>

Here's confirmation from Jim Harrison:

Yep:

1. export existing ISA policies

2. install EE over SE

3. import exported policies

Jim Harrison

Security Business Unit (ISA SE)

"When you come to a fork in the road, take it."

--Yogi Berra

More on this thread:

Q:  Hi. If you purchase ISA Standard, can you upgrade to ISA Enterprise? If so, how? Please advise as soon as possible. Thanks...

A:  There's a Step-Up SKU available that customers can take advantage of. There is some detail here: http://www.microsoft.com/licensing/resources/volbrief.mspx (look under Enterprise Edition Step-up License.

If they need more information the customer should contact their Account Manager or Licensing Specialist. We don't have further detail than the above.