Anti-Explolt and Anti-Rootkit Shleld don't work - plz help!

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Hello,
After latest upgrade of Avast Free Antivirus (date: 2018-03-09) two components stops to work:
-   Anti-Explolt Shleld
-   Anti-Rootkit Sheld
If I try to turn them on manually by pressing TURN ON button nothing happened. Rebooting of OS don’t work.
Do you have a idea what is wrong?

[Asyn]

Repair Avast:
1. Control Panel -> Add/Remove programs -> Avast
2. Click on 'Repair'.
3. Follow instructions.
4. Reboot.

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Thx, but still dont work. Any other ideas?

[Asyn]

- OS..? (32/64 Bit..? - which SP/Build..?)
- Other security related software installed..?
- Which AV(s) did you use before Avast..?

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- OS - WIN 7 Home Premium 64 bit Service Pack 1
- Other security related software installed - No, never on this machine. I use only Your software at all time.
- Which AV(s) did you use before Avast - only Your software.

I’m getting suspicions that it might be some harmful software installed on my computer.

[Asyn]

1. Download Avast Free Antivirus: https://files.avast.com/iavs9x/avast_free_antivirus_setup_offline.exe
2. Follow instructions: https://www.avast.com/uninstall-utility (Run this tool for all prior installed Avast versions..!!)
3. Reinstall Avast with the downloaded installer from point 1.
4. Reboot.

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It's working!!!
Big thx for help. Best regards.

[Asyn]

You're welcome.