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Certificates Corrupted or Altered on Windows XP and Server 2003
When you view the certificate for a product executable file (.exe) on Windows XP or Windows Server 2003, the following error is returned:
‘The integrity of this certificate cannot be guaranteed. The certificate may be corrupted or may have been altered.’
If you attempt to run the executable, an ‘Unverified publisher’ error may be returned.
This issue affects:
Perforce updated digital signatures in product executables. New signatures are SHA-2, which are not compatible with Windows XP or Windows Server 2003.
See the Windows PKI blog for more information.
Upgrade to Service Pack 3, which includes a fix for the issue.
Windows Server 2003
Apply Microsoft hotfix KB 968730.