User who is going to install CRM needs to be member of Administrator group on CRM server
Lets assume that this is considered by default. Next thing you need to have is same user set up as SQL SysAdmin. If this is done, this isn't all that needs to be done. There are more issues that pop-up during CRM installation.
microsoft.crm.setup.server.addaspnetserviceaccounttosqlaccessgroupaction failed. Access is denied
To reslove this issue user needs to be member of the following Acrive Directory groups:
- PrivUserGroup
- PrivReportingGroup
- ReportingGroup
- SQLAccessGroup
- UserGroup
One more thing which you need to point your attention to is type of permission user is granted through Active Directory which must be set up as Read/Write and must be applied to This object and all dependent obects.
And, here is a Microsoft's KB article which explains how to install CRM with minimum permissions. Article is written for CRM 4.0 but requirements are the same.
http://support.microsoft.com/kb/946677
