Error loading watches index – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 6.8-8.9

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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.

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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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