SharePoint 2019: SSA topology Index Partition shows State Degraded when Windows Service SearchHostController is running as the “services” account

Question

• This is a test SharePoint 2019 MinRole farm with 2 servers (1 App with Search, 2 Front-End with Distributed Cache).

• In Central Administration I see the yellow warning under Index Partition 0 since it was set up.

• When running Get-SPEnterpriseSearchStatus -SearchApplication $ssa |ft -Autosize Name, State, Details IndexComponent State shows Degraded.

• If I change the Windows Service SearchHostController Service Account in Central Admin from the "services" account to the "farm" account, this issue will get fixed.

• I have checked all permissions to make sure they are correct.

Any idea about how to resolve this issue with the account used to run SearchHostController?

Answer 1

Assigning Modify permissions for the "services" account at the folder level on the server on D:\SearchIndex (where the index partition is located) fixed the Degraded State.

Answer 2

1. policy right - Run As Service - for windows service of search
2. add this account as Admininstartor - Go to CA > Service Applications > Select Search Service Application > in ribbon Permission > add account with full control

Hope it helps!