Virus Definitions Invalid date

[SumpoZ]

@SumpoZ
Have you tried clicking [Update] again?

Yep.
Screenshot:

[DavidR]

@    SumpoZ
To remove a duplicate image, click the Modify icon top right of your post.

When that opens go to the Attachments and other options again and uncheck the duplicated image.

[Zitrus]

Am I in a land of miracles?

Today, Avast FAV v20 updated aswdefs.ini the first time
without a restart or doing anything on my part

Is it finally grown up? Or was it a microupdate of Avast FAV? Great again!

[SumpoZ]

Am I in a land of miracles?

Sadly, I am not in this land.
Screenshots:

[DavidR]

Am I in a land of miracles?

Sadly, I am not in this land.
Screenshots:

Have you tried any of the previous suggestions.

Avast Repair, followed by a restart (full shutdown and restart) ?

[SumpoZ]

Have you tried any of the previous suggestions.
Avast Repair, followed by a restart (full shutdown and restart) ?

Yes. I wrote about this in a message (Reply #28) from may 7 here on page 2.

[DavidR]

Have you tried any of the previous suggestions.
Avast Repair, followed by a restart (full shutdown and restart) ?

Yes. I wrote about this in a message (Reply #28) from may 7 here on page 2.

Were those restarts full restart as in the image attached to my Reply #23 as windows 10 can do a quick shutdown and that isn't the same.

[SumpoZ]

Were those restarts full restart as in the image attached to my Reply #23 as windows 10 can do a quick shutdown and that isn't the same.

Yes. I knew about this on may 7.
But to make sure, I restarted the computer now again several times including restarts under a user with administrative rights.
In addition to restarts, I did shutdown with the Shift key pressed.
Executed commands in cmd:
shutdown /s /f /t 0
shutdown /r /f /t 0
Even disabled "Fast Startup" feature, then were restarts again.
Repair, then were reboots again.
I feel that maybe only a complete reinstall of Avast Antivirus will help. But this is again an additional waste of time. Moreover, it has already been written here that reinstalling did not even help, because Avast Antivirus leaves a lot of leftovers that are difficult to remove. So sad.

[bob3160]

Clean Install of Avast:
https://goo.gl/4Ptzkf
If you need additional help with the Clean Install, watch this:
https://youtu.be/p-h3myRD51A

[SumpoZ]

Ooh...
Finally, after completely reinstalling Avast, the update date appeared.
First, the usual removal of Avast Antivirus via Windows Control Panel. Then restart.
Avastclear.exe (Uninstall Utility https://www.avast.com/en-us/uninstall-utility) utility was used in Windows safe mode for complete deletion Avast Free Antivirus 20.3.2405 (thanks to bob3160).
Then restart again.
But even after all this, there were still a lot of Avast folders and files in the file system (in folders "C:\ProgramData"; "C:\Users\UserName\AppData\Local"; "C:\Users\UserName\AppData\Roaming"; etc). All Avast folders and files were also deleted manually, thanks to "Everything" app with brilliant fast (in milliseconds) search feature. If someone in a similar situation is going to delete Avast folders and files, do it very carefully, you should know what you are doing.
Then the offline installer was used for installation Avast Free Antivirus 20.3.2405. During new installation, the PC was disconnected from the Internet. (And the disconnect from the Internet was performed at the first step, before deleting Avast Antivirus via Windows Control Panel.)
Before the Internet connection was established, the "Invalid date" label appeared again. And I then thought that all this time to reinstall was wasted. But after the definitions update, everything was fine.
I hope that in the future will be no problems with the update date again. And I hope that the next version of the Avast Antivirus will fix this to ensure that this problem does not occur.
Thanks to everyone who answered and helped here.
Screenshot (Russian language, but you can see that the date is all right; before reinstalling was English, to make it more understandable to the people of this forum):

[bob3160]

You're welcome.