Error loading watches index – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 6.8-8.9

Briefly, this error occurs when Elasticsearch is unable to load the .watches index, which is used for storing Watcher history and watch definitions. This could be due to a corrupted index, insufficient permissions, or a missing index. To resolve this issue, you can try to restore the index from a backup, check and adjust the permissions, or recreate the index if it’s missing. Additionally, ensure that the Elasticsearch cluster is healthy and that there are no network connectivity issues.

This guide will help you check for common problems that cause the log ” error loading watches index ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin, index.

Log Context

Log “error loading watches index” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

                    configuration = INACTIVE;
                } else {
                    checkWatchIndexHasChanged(metadata; event);
            } catch (IllegalStateException e) {
                logger.error("error loading watches index"; e);
                configuration = INACTIVE;


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