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Updating failed the response is not a valid JSON response - Solution
This case happened to me always after updating something in my WordPress. Any suggestion solution via Permalink does not work. This solution work for me, so it might be a help to anyone who has similar issues:
The solution is via FILE MANAGER in your Hosting provider.
- Login to your CPanel (Control Panel) or hosting provider
- Find FILE MANAGER
- Follow the steps below
- After you follow all actions, check your WordPress.
NOTE:
In Step #4: if you can not find file .htaccess, you might need to right-click on your mouse to UNHIDE so that .htaccess will show the files.
In step #8: Copy the code below, and paste it at the bottom of your file .htaccess
<IfModule mod_security.c>
SecRuleEngine Off
SecFilterInheritance Off
SecFilterEngine Off
SecFilterScanPOST Off
SecRuleRemoveById 300015 3000016 3000017
</IfModule>
I hope it works. thx
Guide for cPanel - Main
1: Click “File Manager”
![](https://driveway-media-prd.s3.amazonaws.com/screenshots/81005b34-d2b4-4743-b498-e1e4f87bfadf/content_qbt5UL6.png)
2: Click on folder : Public_html
In FILE MANAGER, find and Click folder PUBLIC_HTML
![](https://driveway-media-prd.s3.amazonaws.com/screenshots/81005b34-d2b4-4743-b498-e1e4f87bfadf/content_Kj41X01.png)
3: Click Public_html
![](https://driveway-media-prd.s3.amazonaws.com/screenshots/81005b34-d2b4-4743-b498-e1e4f87bfadf/content_DVyKzDp.png)
4: Find .htaccess
After click Public_html , on your righ find .htaccess
![](https://driveway-media-prd.s3.amazonaws.com/screenshots/81005b34-d2b4-4743-b498-e1e4f87bfadf/content_mF2KZQy.png)
5: Click “Edit”
![](https://driveway-media-prd.s3.amazonaws.com/screenshots/81005b34-d2b4-4743-b498-e1e4f87bfadf/content_cd90gxC.png)
6: Click the “Edit” button
![](https://driveway-media-prd.s3.amazonaws.com/screenshots/81005b34-d2b4-4743-b498-e1e4f87bfadf/content_6WC2jl0.png)
7: Scroll to the bottom of Edit Page
in your mouse and at file .htaccess, do right click, find EDIT and click EDIT
![](https://driveway-media-prd.s3.amazonaws.com/screenshots/81005b34-d2b4-4743-b498-e1e4f87bfadf/content_I4UHNdm.png)
8: Paste the Code
Paste the Code <ifModule mod_security> , and click SAVE CHANGES
![](https://driveway-media-prd.s3.amazonaws.com/screenshots/81005b34-d2b4-4743-b498-e1e4f87bfadf/content_3wfWO90.png)
9: Click SAVE CHANGES
After PASTE the code, click SAVE CHANGES (at top right)
![](https://driveway-media-prd.s3.amazonaws.com/screenshots/81005b34-d2b4-4743-b498-e1e4f87bfadf/content_IjdEFCt.png)
10: LOGOUT from CPanel
![](https://driveway-media-prd.s3.amazonaws.com/screenshots/81005b34-d2b4-4743-b498-e1e4f87bfadf/content_9Js0eEz.png)
Get back to your WordPress, and check the result. Hope it works!
If it doesn't work too, contact your hosting provider, they will help you.