# Error: Multi-threaded server is not available on Windows. Falling back to single thread

**URL:** <https://forum.autonomys.xyz/t/error-multi-threaded-server-is-not-available-on-windows-falling-back-to-single-thread/46>\
**Category:** Support\
**Tags:** windows, error\
**Created:** [April 19, 2022, 9:15pm UTC](https://forum.autonomys.xyz/t/error-multi-threaded-server-is-not-available-on-windows-falling-back-to-single-thread/46 "2022-04-19T21:15:12Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![ImmaZoni](https://yyz1.discourse-cdn.com/flex011/user_avatar/forum.autonomys.xyz/immazoni/32/7_2.png) [@ImmaZoni](https://forum.autonomys.xyz/u/ImmaZoni)\
**Post date:** [April 19, 2022, 9:15pm UTC](https://forum.autonomys.xyz/t/error-multi-threaded-server-is-not-available-on-windows-falling-back-to-single-thread/46/1 "2022-04-19T21:15:12Z")

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**Product:**

Subspace Binary

**System:**

Any

**OS:**

Windows 10 & Windows 11

**Error Messages:**

`Multi-threaded server is not available on Windows. Falling back to single thread.`

**Issue:**

Attempting to start a node on windows shows this error, it also appears to significantly hinder the syncing process.

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<div class="post-metadata">

**Author:** ![ImmaZoni](https://yyz1.discourse-cdn.com/flex011/user_avatar/forum.autonomys.xyz/immazoni/32/7_2.png) [@ImmaZoni](https://forum.autonomys.xyz/u/ImmaZoni)\
**Post date:** [April 19, 2022, 9:17pm UTC](https://forum.autonomys.xyz/t/error-multi-threaded-server-is-not-available-on-windows-falling-back-to-single-thread/46/2 "2022-04-19T21:17:13Z")

</div>

This is a known error we are working on resolving, it is actually a core issue with Substrate, which is the framework which the Subspace Network is built on.

Currently it is not resolved but you can track the issue here.

> <https://github.com/subspace/subspace/issues/307>
>
> Syncing on Windows takes about 6 Hours, on mac with the same internet connection… this sync takes about 30 min. When starting on windows you get the following output. Which may indicate that only a single thread is being used for the syncing of the node, causing it to take significantly longer than needed. Issue has also been reported by a user aswell. 
> 
> \`\`\`
> 2022-03-29 22:43:19 Subspace
> 2022-03-29 22:43:19 ✌️ version 0.1.0-042302e-x86\_64-windows-msvc
> 2022-03-29 22:43:19 ❤️ by Subspace Labs \<https://subspace.network\>, 2021-2022
> 2022-03-29 22:43:19 📋 Chain specification: Subspace testnet
> 2022-03-29 22:43:19 🏷 Node name: Void-1
> 2022-03-29 22:43:19 👤 Role: AUTHORITY
> 2022-03-29 22:43:19 💾 Database: RocksDb at C:\\Users\\Justin\\AppData\\Local\\subspace-node-windows-x86\_64-snapshot-2022-mar-09.exe\\data\\chains\\subspace\_test\\db\\full
> 2022-03-29 22:43:19 ⛓ Native runtime: subspace-100 (subspace-1.tx1.au1)
> 2022-03-29 22:43:50 Last archived block 265113
> 2022-03-29 22:43:50 Archiving already produced blocks 265114..=265202
> 2022-03-29 22:43:50 🏷 Local node identity is: 12D3KooWPJ3JoaHSG3fGBxHnkn5ASWqbUzFHAGdZk2kANp2t6bCA
> 2022-03-29 22:43:52 🧑‍🌾 Starting Subspace Authorship worker
> 2022-03-29 22:43:52 📦 Highest known block at #265302
> 2022-03-29 22:43:52 〽️ Prometheus exporter started at 127.0.0.1:9615
> 2022-03-29 22:43:52 Multi-threaded server is not available on Windows. Falling back to single thread.
> 2022-03-29 22:43:52 Listening for new connections on 0.0.0.0:9944.
> 2022-03-29 22:43:53 🔍 Discovered new external address for our node: /ip4/71.209.182.243/tcp/30333/p2p/12D3KooWPJ3JoaHSG3fGBxHnkn5ASWqbUzFHAGdZk2kANp2t6bCA
> 2022-03-29 22:43:57 ⚙️ Syncing, target=#336948 (24 peers), best: #265348 (0x12c1…3949), finalized #0 (0x332e…4a74), ⬇ 3.5MiB/s ⬆ 18.8kiB/s
> 2022-03-29 22:44:02 ⚙️ Syncing 12.9 bps, target=#336949 (25 peers), best: #265413 (0xcf82…8227), finalized #0 (0x332e…4a74), ⬇ 108.2kiB/s ⬆ 22.9kiB/s
> \`\`\`