If you uninstall Single Sign On and have not disabled the users the subscription check will still show SSO usage.
Single Sign On will still check in when the AuthAnvil Subscription web service performs a subscription check-in.
Method #1 Install SSO and manually disable the users in AuthAnvil Manger > Single Sign > Users
Select the users, then select Disable Selected.
Select Save changes.
Note: If a user is a 2FA Site Admin they will be automatically enabled as an SSO user. You will not be able to disable these users. This is expected.
If you wish you could now uninstall SSO from Programs and Features.
Method #2 If re-installing SSO is not an option we can modify the DB to remove the SSO usage information ussing SQL Management Studio.
Note: If you do not have SQL Management Studio installed it can be downloaded here http://www.microsoft.com/en-ca/download/details.aspx?id=42299
Note: Before proceeding ensure you have a recent backups for AuthAnvil.
2FA following this guide https://helpdesk.kaseya.com/entries/26572587
SSO following this guide https://helpdesk.kaseya.com/entries/29734218
Open SQL Management Studio > Databases > Anvil > Tables > dbo.SSO_ServerUsage
Right click on the table and select Edit top 200 rows
Delete all rows
Select Execute SQL
So long as SSO is not reinstalled these rows will no longer be used.