windows xp - Error attempting to install SQL Server 2008 -

windows xp - Error attempting to install SQL Server 2008 -

when seek run setup.exe start installation, next error in windows_xp:

microsoft .net framework cas policy manager has encountered problem , needs close.

this in error signature: appname: caspol.exe appver: 2.0.50727.3053 appstamp:4889dd08 modname: mscorwks.dll modver: 2.0.50727.3607 modstamp:4add5446 fdebug: 0 offset: 000d0494

i have tried removing , reinstalling of .net installations , didn't resolve issue. it's weird, because 1 time tried run setup got 2 application events subsequent tries did not produce more events.

the first event's id 1023:

.net runtime version 2.0.50727.3607 - fatal execution engine error (7a09795e) (80131506)

it might possible uninstallation did not remove objects such registry keys.

this may of utilize cannot verify success rate having not used myself.

http://www.justanswer.com/computer/5gtob-microsoft-net-framework-cas-policy-manager-encountered.html

sql-server-2008-r2 windows-xp