AdBlock Plus has denied Google has found a way of getting around its adblocking tool, instead blaming the problem on Chrome.
Users complained that ads were loading on YouTube and not displaying a skip button.
Initially it was thought the failure to use the adblocking tool was an aggressive tactic by Google to combat its flagging YouTube ad revenues.
One user said: "I'm having trouble using Adblock on managed Chrome devices like the Chromebook and Chromebox. I have them setup to be Public Kiosks, and I've added Adblock to be a forced installed extension, but it never installs.
"I'm wondering if Google has blocked Adblock from being installed in a public session."
Another tweeted: "So YouTube has finally clamped down on Adblock, if Adblock is active on the page, the pre-roll ad will play without a skip option."
However, Be Williams, director of AdBlock Plus, said: "The problems on YouTube are because of an issue in Chrome. It apparently is only affecting a small subset of users. We know about it, I imagine they'll get a fix up soon."
A recent post on Google's Chromium support forum reported a workaround had been found through a patch.
Adblock Plus owner Eyeo recently saw off two legal cases in Germany fought by publishers claiming its practice of adblocking was not legal. ®