Windows Service pack2 installation error

Everytime I try to install the Service Pack 2 I reeive this error message
about a 1/3 of the way complete "UNABLE TO READ FROM OR WRITE TO DATABASE"
after that it cancels the install.
Any suggestions welcome thanks John

Cannot install Service Pack 2
http://www.michna.com/kb/WxSP2.htm#C...Service_Pack_2

Locate on the page:

Cryptographic service and related errors
Some of the possible error messages are:
a.. Cryptographic service error
b.. Error 0x800710D9 Unable to read from or write to the database

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TaurArian [MS-MVP] 2005-2006
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"JAviles" <> wrote in message
news:A428D4DA-763E-421E-A756-...
> Everytime I try to install the Service Pack 2 I reeive this error message
> about a 1/3 of the way complete "UNABLE TO READ FROM OR WRITE TO DATABASE"
> after that it cancels the install.
> Any suggestions welcome thanks John