How do I stop the yahoo search attached to my chrome!

Hello Dan, 

Thank you for writing back to us. We really appreciate your efforts. We understand that you have managed to resolve the issue by blocking those sites using other extension.

If you still have the issue in furure, you can try to reset the browser and restart the device. This will change the browser to the default settings. 

Refer the below article to know how to reset it : 

Resetting your internet browser to default settings

Hope this will help you to resolve the issue. If you still need any further help, feel free to contact us at anytime. Have a great day!

A commerce site, Acmetool I think, offered a discount button and it attached a search redirect to my chrome. AVG products didn't prevent this from happening and I can't seem to stop it.

Hello Dan, 
Thank you for contacting AVG Community Support.
We understand that your browser search redirect to the particular sites. We'll certainly check and help you out.
A browser hijacker is malicious software that changes a browser’s behavior, settings, or appearance without user consent. A hijacked browser creates advertising revenue for the hijacker and can facilitate more dangerous activities such as data collection and keystroke logging.
The browser hijacker is not really a virus in the full sense of the word. A browser hijacker can also redirect your searches towards other pages, and it can be very annoying to have it on your computer. AVG AntiVirus is a great malware removal application, but they may not remove the hijacker because it is often installed by the user with administrator permission. This often happens during bundled software downloads and subsequent installations. Hence, unwanted software and/or add-ons hijack the browser.
Refer the following article to reslve the issue: | AVG (https://support.avg.com/SupportArticleView?l=en&urlname=avg-remove-browser-hijacker)
If you have completed all of the steps in the above article, but you are still experiencing issues, please let us know.
Thank you and keep us updated.

Hello Dan, 
Thank you for contacting AVG Community Support.
We understand that your browser search redirect to the particular sites. We'll certainly check and help you out.
A browser hijacker is malicious software that changes a browser’s behavior, settings, or appearance without user consent. A hijacked browser creates advertising revenue for the hijacker and can facilitate more dangerous activities such as data collection and keystroke logging.
The browser hijacker is not really a virus in the full sense of the word. A browser hijacker can also redirect your searches towards other pages, and it can be very annoying to have it on your computer. AVG AntiVirus is a great malware removal application, but they may not remove the hijacker because it is often installed by the user with administrator permission. This often happens during bundled software downloads and subsequent installations. Hence, unwanted software and/or add-ons hijack the browser.
Refer the following article to reslve the issue: | AVG (https://support.avg.com/SupportArticleView?l=en&urlname=avg-remove-browser-hijacker)
If you have completed all of the steps in the above article, but you are still experiencing issues, please let us know.
Thank you and keep us updated.

Hello Dan, 

Thank you for writing back to us. We really appreciate your efforts. We understand that you have managed to resolve the issue by blocking those sites using other extension.

If you still have the issue in furure, you can try to reset the browser and restart the device. This will change the browser to the default settings. 

Refer the below article to know how to reset it : 

Resetting your internet browser to default settings

Hope this will help you to resolve the issue. If you still need any further help, feel free to contact us at anytime. Have a great day!