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Issue:
The search service is not able to connect to the machine that hosts the administration component.
Cause:
Search is not able to connect because of many reasons. In this article, we are providing all possible causes and solutions.
Solutions:
Please find solutions below that can resolve the issue.
Solution 1:
In the end, it turns out that the application pool that hosts the search service application doesn’t have the correct access.
You can simply change the application pool to use SharePoint Web Services System for search service applications and check.
Solution 2:
Enable the timer job and do an IIS reset.
1. Run below PS command to know the status of timer job:
Get-SPTimerJob job-application-server-admin-service
Result ==> Is Disabled: True
2. Run below PS command to enable the service:
Enable-SPTimerJob job-application-server-admin-service
Result ==> IsDisabled: False
3. Run Net Stop sptimerv4
4. Run Net start sptimerv4
5. Run iisreset
Solution 3:
Ensure the account has full control permissions on the Search service application.