Scenario: I have created a custom master page for our site, all the custom JS and CSS is been on master page folder

Error: one of sudden day All the CSS are disabled automatically, I have checked with the network there are not any blockage from the firewall

Temporary Solution: Temporary solution I found that when I check out the page it works fine but after publish it ruins

Looking for expert advice on that

Tried Solution Tried Solution: I tried to publishing feature ON/OFF but not works in my case

even Default master page (seattle and oslo ) have the same issue

1 Answer 1


Go to SharePoint Admin Center, and make sure "Custom Script" setting is enabled. If not, enable it. After change, it might take up to 24 hours to take effect.

Try to re-add the these disabled references using SharePoint Designer 2013.

If this issue still exists, you may need to contact Office 365 support to check if some backend changes/updates caused this issue via Admin Center->Support->new service request.

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