System test fails when installing Unity 3.0.2

[rkiamil]

I get the following error when trying to install Unity on a test server (This server has it own DNS, AD, Exchange installed). Iam trying to install Unity using the Administator account. The error is as follows.

-- START OF ERROR --

The following problem was found while verifuing that the system meets the installation requirements:

The current user does not have or does not belong to a group that has the right to act as part of the operating system. User reason: An object in the LSA policy database was not found. The object may have been specifield either by SID or by name, depending on its type. Error Code: -1073741772 Error Text: Object Name not found. File: h:\commsvr\Sources\SysCheck\PreInstallMiscTests\AvHasActAsOSRight.cpp Line: 45 Group reason: LSA Error Code: -2147483622 Error Text: {No More Entries}

No more entries are available from an enumeration operation. File: h:\commsvr\Sources\SysChecka\PreinstallMiscTest\AvHasActAsOSRights.cpp Link:90

Give the current user the nescessary rights, then rerun setup

-- END OF ERROR --

Does any body know what changes would i need to make to the administator in AD Domain?

Thank Rif

[Markus Schneider]

Make sure you have the necessary rights...

Start|Programs|Administrative Tools|Domain Controller Security Policy

make sure your installation account has "act as a part of the operating system" User right.

Also, make sure you're logged into the domain when installing, not just a local system admin account.

[rkiamil]

There is no local system, the system is DC on the Domain (the only DC). Iam login on as a administrator of the Domain.