> For the complete documentation index, see [llms.txt](https://docs.wproofreader.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.wproofreader.com/v6.12.0/troubleshooting/client-side/spell-checker-wsc-dialog-plugin-for-ckeditor-4-stopped-working-incessant-loading-spinner.md).

# Spell Checker "WSC" dialog plugin for CKEditor 4 stopped working: incessant loading spinner

### Problem and symptoms <a href="#spellchecker-wsc-dialogpluginforckeditor4stoppedworking-incessantloadingspinner-problemandsymptoms" id="spellchecker-wsc-dialogpluginforckeditor4stoppedworking-incessantloadingspinner-problemandsymptoms"></a>

All of a sudden, starting January 10, 2022, the Spell Checker “WSC” dialog plugin stopped working despite the fact that previously it worked properly. As a result, you see an incessant loading spinner after clicking on the "Check Spelling" under the ABC button on the CKEditor 4 toolbar.

<figure><img src="/files/CBAzyaafyWTuhaNQgvmJ" alt=""><figcaption></figcaption></figure>

### Root cause <a href="#spellchecker-wsc-dialogpluginforckeditor4stoppedworking-incessantloadingspinner-rootcause" id="spellchecker-wsc-dialogpluginforckeditor4stoppedworking-incessantloadingspinner-rootcause"></a>

As it was [announced](https://webspellchecker.com/blog/2020/12/02/end-of-life-for-spell-checker-dialog-plugin-for-ckeditor-4/) more than a year ago, **effective January 10, 2022, the cloud-based version of the WSC plugin for CKEditor 4 was disabled (for both free and paid users)**. This is an official end-of-life (EOL) date of the plugin, it is deprecated and no longer supported.

Users that added WSC plugin to the CKEditor **config.js** file using the **extraPlugins** parameter or still using CKEditor lower than 4.16.0 where this plugin was built-in by default may face an issue with the loading spinner.

### Solution <a href="#spellchecker-wsc-dialogpluginforckeditor4stoppedworking-incessantloadingspinner-solution" id="spellchecker-wsc-dialogpluginforckeditor4stoppedworking-incessantloadingspinner-solution"></a>

To solve the issue, remove the WSC plugin from the **extraPlugins** parameter (if any) or disable it using the **removePlugins** parameter in the CKEditor **config.js** file:

```javascript
config.removePlugins = 'wsc';
```

Alternatively, instead of the WSC plugin, you can use the free version of the **SCAYT plugin** or commercial version of **WProofreader add-on for CKEditor 4**.

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