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We've installed Windows Server 2003 / Windows XP and get the following error: The integrity of this certificate cannot be guaranteed. The certificate may be corrupted or may have been altered.

In the course of the conversion to SHA2, two hotfixes must be installed on the Windows Server 2003 platform to correct this error. ServicePack 3 must be installed for Windows XP. A more detailed description of the problem can be found in Microsoft's technical blog (

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