Author Topic: Update to 20.2 causes INACCESSIBLE_BOOT_DEVICE  (Read 863 times)

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Offline hannu60

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Update to 20.2 causes INACCESSIBLE_BOOT_DEVICE
« on: April 28, 2020, 09:48:51 PM »
Updating Avast 20.1 to 20.2 causes INACCESSIBLE_BOOT_DEVICE after restart.
Recovery from restore point ok.
Update itself seems to be ok, but restart fails.
BIOS, drivers and Windows are up to date.

HP ProDesk 400 G3 MT (3 years old)
238GB SAMSUNG MZ7LN256HMJP-000H1 (SATA (SSD))
931GB Western Digital WDC WD10EZRZ-00HTKB0 (SATA )

Windows 10 Version 1909 (OS Build 18363.815)

Tried to resolve this for three weeks (updated BIOS, drivers, new windows updates, removed Intel Rapid Storage Technology etc...), nothing helps.

Offline Asyn

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Re: Update to 20.2 causes INACCESSIBLE_BOOT_DEVICE
« Reply #1 on: April 29, 2020, 06:13:49 AM »
- Which Avast..? (Free/Pro/IS/Premium)
- Other security related software installed..?
- Which AV(s) did you use before Avast..?
W 8.1 [x64] - Avast PremSec 21.4.2462.B3 [UI.616] - EEK - Firefox ESR 78.10.1 [NS/uBO/PB] - TB 78.10.1
Avast-Tools: Secure Browser 90.0 - Cleanup 21.1 - SecureLine 5.11 - Driver Updater 21.1 - CCleaner 5.78
Avast Wissenswertes (Downloads, Anleitungen & Infos): https://forum.avast.com/index.php?topic=60523.0

Offline hannu60

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Re: Update to 20.2 causes INACCESSIBLE_BOOT_DEVICE
« Reply #2 on: April 29, 2020, 11:37:14 AM »
Avast Free Antivirus 20.1.2397 (build 20.1.5069.562)
Other security related software installed: SuperAntiSpyware (service stopped), Malwarebytes Free 3.7.1
Avast has been installed all the time

Offline Asyn

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Re: Update to 20.2 causes INACCESSIBLE_BOOT_DEVICE
« Reply #3 on: April 29, 2020, 12:16:21 PM »
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.

PS: Regarding Avast & Malwarebytes, see: https://forums.malwarebytes.com/topic/200324-exclusions-for-avast-users/
W 8.1 [x64] - Avast PremSec 21.4.2462.B3 [UI.616] - EEK - Firefox ESR 78.10.1 [NS/uBO/PB] - TB 78.10.1
Avast-Tools: Secure Browser 90.0 - Cleanup 21.1 - SecureLine 5.11 - Driver Updater 21.1 - CCleaner 5.78
Avast Wissenswertes (Downloads, Anleitungen & Infos): https://forum.avast.com/index.php?topic=60523.0

Offline hannu60

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Re: Update to 20.2 causes INACCESSIBLE_BOOT_DEVICE
« Reply #4 on: April 29, 2020, 05:08:44 PM »
Thank you, that helped

Offline Asyn

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Re: Update to 20.2 causes INACCESSIBLE_BOOT_DEVICE
« Reply #5 on: April 30, 2020, 06:25:24 AM »
You're welcome.
W 8.1 [x64] - Avast PremSec 21.4.2462.B3 [UI.616] - EEK - Firefox ESR 78.10.1 [NS/uBO/PB] - TB 78.10.1
Avast-Tools: Secure Browser 90.0 - Cleanup 21.1 - SecureLine 5.11 - Driver Updater 21.1 - CCleaner 5.78
Avast Wissenswertes (Downloads, Anleitungen & Infos): https://forum.avast.com/index.php?topic=60523.0