Avg internet security

Hello Ramakanta,
The previous update files might not got installed properly and that's the reason you might have faced the issue.
Open the AVG program and click on the options on the right top corner and click on the Advanced settings.
Select update on the left panel and select Manage.
Select delete temporary update files > Click OK twice.
Try to update the AVG program and check if it helps.

If the issue persists please try to repair the AVG program and check whether it resolves the issue. Please follow the instructions on the article avgclick.me/RepairAVG to repair your AVG program.
Thank you.

please ,why a.bin file missing error comming.what can be the main reason

Ramakanta, Also 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!. Other posting (https://support.avg.com/answers?id=906b0000000DW8WAAW).
AVG Guru

Hello Ramakanta,
The previous update files might not got installed properly and that's the reason you might have faced the issue.
Open the AVG program and click on the options on the right top corner and click on the Advanced settings.
Select update on the left panel and select Manage.
Select delete temporary update files > Click OK twice.
Try to update the AVG program and check if it helps.

If the issue persists please try to repair the AVG program and check whether it resolves the issue. Please follow the instructions on the article avgclick.me/RepairAVG to repair your AVG program.
Thank you.