Last updated: November 11, 2026

Is Solr down? User reports indicate possible problems with Solr

Apache Solr is an open source search platform built on Lucene that teams run on their own servers and clusters. This page tracks admin reports, common startup and indexing errors, and the fixes that solve them.

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Solr problems reported in the last 24 hours

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Most reported problems

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/* v1.5.0: locations + reports-map side by side (Downdetector-style). */

Most reported locations

Where Solr reports are coming from in the last 24 hours.

No problem locations to show yet. Solr looks fine right now. Locations appear here as soon as users submit reports.

Reports map

📍 View Map

Nothing on the map right now. Solr looks fine.

Latest Solr user reports

No reports yet — be the first to report a problem above.

Solr outage history

Our latest check and the live report status for Solr.

✓ Our latest check (10 November 2026, 10:50 AM PKT): solr.apache.org answered normally in 128 ms.

Good news. Solr has no reported problems right now. If it is not working for you, report it above and your report will appear here.

Solr uptime and reports

Live report counts and the day by day record for the last 30 days.

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Last hour
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Last 24 hours
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Last 30 days

User reports received in each period.

Last 30 days, day by day: 13 October 2026 to 11 November 2026

Green: up. Red: outage. Amber: some checks failed. Grey: no record yet.

The daily record builds from today as our checks run. Grey days have no saved record yet. A red day marks a confirmed outage.

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Solr on social media

An early signal from outside our site, watched in rotation.

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Last hour
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Last 24 hours

Posts on Bluesky saying Solr is down. Checked 11 November 2026, 3:10 AM PKT.

Quiet right now. Nobody on Bluesky is saying Solr is down.

Is Solr Down Right Now?

No, Solr is not down in the hosted sense. Solr is a search server you run on your own hardware or cloud machines. The reports above show the current Solr status from admins and developers.

When many teams report search failures together, a bad release or a common config trap is often behind it. A Solr outage in production usually traces to memory, a broken core, or a cluster problem. This page tracks Solr down reports and the fixes that work.

Is Solr Down for Me or Everyone?

Start at the admin console on port 8983. If the console loads, the process lives and the fault sits in a core or a query. If the console fails too, check the service and its logs first.

Read the newest lines in the Solr log before you restart anything. A restart hides the first error, and the first error is the useful one. Note the timestamp of the last good search to bound the fault.

Why Won’t Solr Start?

Startup failures usually show in the console output right away. A port clash with another service is common on shared machines. Memory settings that exceed the box also stop the JVM early.

Corrupt state from a hard kill is another cause. If the machine lost power, check the index lock files and the transaction logs. The startup log names the core that blocks the boot.

Why Did a Core Fail to Load?

A core fails when its config or schema has an error. A field type that no longer exists or a bad edit in the config stops loading. The logging screen in the admin console shows the exact failure.

Version jumps change config rules too. After an upgrade, old config files may miss new required pieces. Compare your files with the sample set from the new release before editing blindly.

Why Do Searches Return No Results?

Empty results often mean the index never got the documents. A failed import or an uncommitted batch leaves search empty while the app looks healthy. Check the core overview for the document count. Members of Som Energía know the same split from their client area, where bills load fine while one service page stays blank.

Query settings can hide real results as well. A wrong default field or a filter query that excludes everything returns zero fast. Run the query in the admin console with debug output to see each step.

Common Solr Problems and Fixes

Solr process will not start

Solr process will not start: Read the startup output for the first error line. Free port 8983 if another service took it. Lower the heap setting if the machine lacks memory. Fix the named core config before retrying.

Core shows an initialization failure

Core shows an initialization failure: Open the logging view to read the core error. Check schema and config files for bad field types or missing files. Restore the last known good config if an edit caused it.

Search returns zero results

Search returns zero results: Confirm the document count on the core overview page. Re-run the import or commit pending documents. Test the query in the admin console and read the parsed form it shows.

Solr keeps running out of memory

Solr keeps running out of memory: Raise the heap with the start options if the box has room. Heavy facets and sorting on unindexed fields eat memory fast. Spread load with replicas if traffic keeps growing.

Admin UI is not reachable

Admin UI is not reachable: Confirm the process runs and listens on the right address. Firewalls often block 8983 from outside the server. Test from the server itself first, then open the network path step by step.

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Frequently Asked Questions

Why won’t Apache Solr start?

Read the first startup error. Port clashes, oversized memory settings, and a broken core config are the most common causes.

How do I fix a SolrCore initialization failure?

Open the logging screen in the admin console for the exact error. Fix the schema or config problem it names, then reload the core.

Why is Solr returning no search results?

The index may be empty or the batch never committed. Check the document count, then test the query in the admin console.

Why does Solr run out of memory?

Heap limits, heavy facets, and sorting on the wrong fields drive memory up. Raise the heap or tune the costly queries.

How do I restart Solr safely?

Stop it with the standard bin command so it can close files cleanly. Start it again and watch the log until cores finish loading.

Why can’t I access the Solr admin UI?

The port may be firewalled or Solr may bind a different address. Test the console locally on the server to split the cause.