When you open a website on Google Chrome, the this plug-in is not supported issue may appear.
The content on the webpage fails to load but shows the glitch notice instead.
Now, you might read this post fromMiniToolto find some methods to fix the error.

What does this plug-in is not supported mean?
It means that the issue may be related to the Flash plugin in Google Chrome.
It means there is a problem with the browsers Flash options.
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Flash may be corrupted, or affected websites may be rejected from using Flash.
Step 2:Input the following text into the address box-chrome://parameters/content.
Then, press theEnterkey.

Step 3:Scroll down and locateFlashto click it.
Then, click theAllow sites to run Flashparameter.
Step 4:you’re able to click theAsk firstparameter.

Then, you have enabled Flash in Google Chrome successfully.
This post provides a list of hidden Chrome URLs for internal built-in pages.
Besides, it introduces the purpose of some important Chrome URLs.
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The steps are as follow:
Step 1:Open Google Chrome.
Copy and paste the following address in the address bar:chrome://components/, and press Enter.
Step 2:You will pull up the new page which lists all the components installed in Chrome.
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Just find Adobe Flash Player and clickCheck for update.
If any update is checked, you could get Flash updated.
So, you’re able to try clearing it to fix the problem.
Here is a guideline below for you.
Step 2:Go to theAdvancedtab and selectAll timefrom the drop-down menu.
Step 4:Click theClear databutton to apply this change.
How to free download Chrome Enterprise 32/64 bit for Windows and Mac?
This post provides a step-by-step guide for you.
Here is how to do that:
Step 1:Open Google Chrome.
smack the three dots in the top-right corner to open theSettingsmenu.
Step 2:Go toHelp > About Google Chrome.
Then Chrome will scan to look to see if there is a new version available.
Step 3:If Chrome detects a new version, restart the web app to take effect.
How to run Chrome safety check with chrome://tweaks/safetycheck on Windows?
How to run Chrome safety check on mobile phones?
Here are the details.
in case you find the same issue, you’re able to refer to this post.