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What are the necessary Windows XP security settings for the OCS client?

Answer:

In order to run OCS client on a computer running Windows XP, the security settings must be changed to allow proper communications.

Step 1: Open Windows Explorer

Step 2: Go to “Tools”

Step 3: Go to “Folder Options”

Step 4: Go to the “View” tab and uncheck “Use simple file Sharing (Recommended)”

Step 5: Go to your OCS directory and right-click.  Select Properties.

Step 6: Go to the “Security” tab and then click the "Advanced” button

Step 7: Here we want to ensure that the Inherited From column specifies

<Not inherited> and that we check the box “Replace permission entries on all child objects with entries show here that apply to child objects.”

Step 8: Click Apply and then when prompted, click Yes.

XP Firewall Settings

When installing the OCS Client on XP professional, it is necessary to either disable the Firewall that comes enabled as of SP2 or create an exception.  Failing to do so, will yield undesirable results during the installation\operation of the OCS Client.

1. Go to SETTINGS > CONTROL PANEL > WINDOWS FIREWALL

2. If the Firewall is ON, then go to Exceptions

3. Click ADD PORT

4. For NAME enter "OCS" and PORT enter "13001" (without quotation marks)

5. Click OK