Virus definitions

Thanks for your answer earlier this afternoon, but I have learned the following:
* both "REPAIR" and "UNINSTALL" AVG Internet Security failed => error code 0xe001f946 verification digital signature failed
* "DOWNLOAD" AVG Internet Security using the download-button in the purchase-form failed => error code 0xe001f992 latest version has already been installed

SO: still no solution for updating/ repairing my virus definitions 

Rjm, In future please refrain from carrying out multiple topic postings on the same subject! You won't obtain an answer to your query any faster!. Also, to keep everything together, please try to keep the whole conversation in one question/thread to speed up any resolution. Other posting (https://support.avg.com/answers?id=9060N000000U2qGQAS).
AVG Guru