When you use the Microsoft BackOffice Small Business Server 4.0 Client Add Pack to increase the number of licenses on an Small Business Server 4.0 or Small Business Server 4.0a computer, you are unable to add licenses if you reinstall Small Business Server 4.0a and immediately upgrade to Small Business Server 4.5.

If you attempt to use the Small Business Server 4.0 Client Add Pack on the upgraded server, you receive an error message that the server already has x client licenses, even though fewer client licenses are displayed in the console.

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This behavior occurs because the license information written to the disk is different in Small Business Server 4.0 and Small Business Server 4.5. The Client Add Pack compares the license information on the server with the information previously written to disk. When the information does not compare, the error message is displayed.

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To resolve this problem, reuse the Small Business Server 4.0 Client Add Pack before you upgrade a server to Small Business Server 4.5.

If you did not apply the Small Business Server 4.0 Client Add Pack (CAP) diskettes before upgrading to Small Business Server 4.5, you can use the CAP Upgrade utility to make a permanent, one-time, one-way conversion of the diskette so it can be applied to Small Business Server 4.5. The utility is available as a no-charge download from the following Microsoft Web site: If you have already attempted to re-apply a Small Business Server 4.0 Client Add Pack diskette to an Small Business Server 4.5 Server (i.e., one that was re-installed using Small Business Server 4.0 and then immediately upgraded to Small Business Server 4.5, before the Small Business Server 4.0 add pack was re-applied), the Small Business Server 4.0 CAP diskette may become corrupted and unusable.

NOTE: If you attempt to run Setup.exe from the temporary directory instead of Convert.exe, you may get a message that the disk is corrupt or unusable. Setup.exe is the executable that gets copied to the Client Add Pack and generates this error because it is trying to read the Client Add Pack header information from the hard drive. You should only see this error when trying to run setup.exe from a damaged Client Add Pack.

Running the Client Add Pack Upgrade utility on a Small Business Server 4.0 CAP diskette may not successfully convert the diskette a useable Small Business Server 4.5 CAP. The only resolution to this situation is to obtain a replacement diskette in exchange for the damaged one.

To exchange you damaged diskette, please contact Microsoft Technical Support for the information needed and the address to which your request for replacement can be sent.

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Replacing Defective Media

If you are experiencing a problem with defective Client Add Packs, contact Microsoft and ask to speak with a Small Business Server Support Professional. The Support Professional can confirm the defective media and outline the full replacement procedure.

For additional information, click the article number below to view the article in the Microsoft Knowledge Base:

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You can also use the Client Add Pack conversion utility to convert Small Business Server 4.0 Client Add Packs to version 4.5 Client Add Packs.

For additional information about obtaining this utility, click the article number below to view the article in the Microsoft Knowledge Base: You can use an unused Small Business Server 4.0 Client Add Pack to increase the number of licenses on a Small Business Server 4.5 computer to 20.

You can use the Small Business Server 4.5 Client Add Pack to increase the number of licenses on a Small Business Server 4.0 computer to 25, but you cannot use it if the new licenses increase the user limit on the server beyond the 25-user limit in Small Business Server 4.0.

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