While running a search on the Search Center of one of the development farms got this error in SharePoint 2013 Search Center site.
Search has encountered a problem that prevents results from being returned. If the issue persists, please contact your administrator.
Correlation ID - 790b329e-391e-2001-cdad-4e0d6da3b38c
The first thing which we noticed on the Server is that there was not enough disk space so we went ahead and freed some space.
A quick look through the logs revealed the following:
w3wp.exe
All query processing components are in ‘Failed’ status.
Solution
On checking the Search Service Application, we saw a warning icon for the index partition and searchable items informing “All Errors”:
The first step in resolving this issue is by resetting the Search Index.
Note: Reset will remove the content index stored, so we have to do a full crawl to rebuild the index once all the Search components are healthy.
Reset will take approximately 1 min. The second step is to restart the Search Services.
- SharePoint Server Search
- SharePoint Search Host Controller
Now, we should have all the search components in green.
If we perform a Search operation, it would not show us any results since the Index was reset.
The next step is to perform a full crawl on the content source. Once it is complete, we should see Search results.
Hope this helps you.