Acrobat Pro DC 2015 version perpetual license changing to trial version after antivirus installatio

Hello,

I hope you are doing well. I am sorry for the trouble and the delayed response.

I checked with your registered email address on the community and could not locate any product registered to your account.

As of now, Acrobat 2015 is an end-of-life product, and you may face this error. You can view about support times on the link: Products and technical support periods (adobe.com)

I cannot guarantee this will work; however, if you have the serial key for the application, you may check on the below link: https://accounts.adobe.com/products/

You will need to put your serial key, and the product will be registered to your account if available.

Let me know if it works.

Thanks,

Souvik.