Avira antivirus - I can't uninstall, or repair it!


M

martinlest

Well-known member
Local time
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29
OS
Windows 11 23H2
I wanted to remove Avira Anti-virus, but the uninstallation didn't fully complete, and though the programme folders are gone, I was left with some entries in the registry. They won't allow me to remove them manually.

The result is that Windows Defender, when I run it, appears as just a blue background with the log/shield on it. I tried reinstalling Avira but the setup tells me I already have the programme, and the 'Repair' option fails at 50%. Revo uninstaller doesn't see any Avira software.. so I am now stuck. There are, apparently, Microsoft removal tools, but none of the links I have found actually leads me to what I might need.

Would appreciate some help in getting rid of the last remnants of Avira (only in the registry, I think: the three folders in C drive aren't there, at least), so that I can run Defender.

Many thanks!
 
Windows Build/Version
Windows 11 23H2

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Last edited:

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An alternative or "complement" could be reinstalling Windows Defender (maybe there's a tutorial), or running DISM Restorehealth and SFC scannow.
 

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Samsung SyncMaster T260
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256GB eMMC (Windows)
2TB USB3 HDD Toshiba (Data)
They have, or had a specific tool for cleaning Avira Registry Entries, it's an older tool, but worth trying

www.majorgeeks.com

Download Avira Registry Cleaner - MajorGeeks

Avira Registry Cleaner is a support tool from Avira to remove all known registry keys after uninstalling any Avira product.
www.majorgeeks.com

A Guy
 

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    Avast
martinlest said:
I tried reinstalling Avira but the setup tells me I already have the programme, and the 'Repair' option fails at 50%. Revo uninstaller doesn't see any Avira software.
Click to expand...


1) Check for restore points:


www.elevenforum.com

See List of Available Restore Points in Windows 11

This tutorial will show you how to see a list of all available restore points in Windows 10 and Windows 11. Turning on system protection for a drive allows System Restore to include the drive when restore points are created so you can undo undesired system changes by reverting to a previous...
www.elevenforum.com www.elevenforum.com



Option Two

See List of Available Restore Points using Command:

Windows PowerShell:
Get-ComputerRestorePoint | Format-Table -AutoSize

OR

Command Prompt:
PowerShell Get-ComputerRestorePoint^|Format-Table -AutoSize






2) Perform a system restore using the oldest available restore point:

www.elevenforum.com

Use System Restore in Windows 11

This tutorial will show you how to use System Restore to go back to a restore point in Windows 11. Turning on system protection for a drive allows System Restore to include the drive when restore points are created so you can undo undesired system changes by reverting to a previous point in...
www.elevenforum.com www.elevenforum.com




3) Rerun:

support.avira.com

Uninstallation of Avira for Windows

The procedure to uninstall the program differs depending on the operating system you are using. Please select the instructions relevant to the operating system of your PC. WINDOWS 11 1. Click th...
support.avira.com support.avira.com
 

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Windows 10Intel(R) Core(TM) i7-4800MQ CPU @ 2.70GHz16 GB Total: Manufacturer : Samsung MemoryTyp...NVIDIA Quadro K3100M; Intel(R) HD Graphics 4600
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Computer type
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Manufacturer/Model
HP
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Intel(R) Core(TM) i7-4800MQ CPU @ 2.70GHz
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16 GB Total: Manufacturer : Samsung MemoryType : DDR3 FormFactor : SODIMM Capacity : 8GB Speed : 1600
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IDT High Definition Audio CODEC; PNP Device ID HDAUDIO\FUNC_01&VEN_111D&DEV_76E0
Hard Drives
Model Hitachi HTS727575A9E364
Antivirus
Microsoft Defender
Other Info
Mobile Workstation
If what you've tried up to now has failed then use "Everything" as Admin and search for Avira. Remove all that you can and reboot.
If needed - try reinstalling it then use the removal tool.

voidtools

www.voidtools.com www.voidtools.com
 

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    ASUS Vivobook
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    AMD Ryzen™ 7 7730U
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    AMD Ryzen 7 5800H / 3.2 GHz
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64 GB
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Del U2723QE
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3840 x 2160
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Corsiar MP600 1TB
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Silverstone 750 GOLD
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Silverstone FARA 513
The one thing notably missing now seems to be an official current Avira removal tool. There was one years ago (post #4), but apparently not now. Hmm.

So as A Guy said, that's probably the first and easiest thing to try. Note: recommended to be run from Safe Mode:
support.avira.com

Uninstallation of Avira for Windows

The procedure to uninstall the program differs depending on the operating system you are using. Please select the instructions relevant to the operating system of your PC. WINDOWS 11 1. Click th...
support.avira.com support.avira.com

If you than need to search the registry, this free registry editor has a better search feature than regedit:
www.oo-software.com

O&O RegEditor: Editing the registry securely

Edit the Windows registry safely and clearly. With search, favorites and backup options for more control.
www.oo-software.com www.oo-software.com
 
Last edited:

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16GB
Graphics Card(s)
Intel UHD 620
Screen Resolution
1920x1080
Hard Drives
C SN810 SDCPNRY-512G-1006
Browser
Edge, Firefox
Antivirus
Defender
Thanks for the replies... I will look at them closely later today when I am free and report back.

I cannot however, as I mentioned, reinstall Avira, as the setup tells me I already have it on the PC and the only option is a repair, which fails at about 50%. There are no restore points that would be useful unfortunately..

I also found the suggestion on Reddit, mentioned above, but I have no Avira folders on the drives now - presumably just registry entries that block Defender (is that why I get a blank page, with just the logo/shield when I run it?). I agree entirely with the very last comment on that Reddit post!
 

My Computer My Computer

At a glance

Windows 11 23H2i9-11900KF64GB DDR4Asus ProArt RTX 4070 Ti Super 16GB
OS
Windows 11 23H2
Computer type
PC/Desktop
CPU
i9-11900KF
Motherboard
Intel Z590-PLUS
Memory
64GB DDR4
Graphics Card(s)
Asus ProArt RTX 4070 Ti Super 16GB
Hard Drives
1 x Evo 860 2TB + 2 x Evo 850 500GB SSDs
PSU
Corsair 850W
Cooling
Corsair H100i AIO
OK, I found the Avira Registry cleaner tool on another site, but even in Safe Mode it did nothing. The 'Everything' software however found lots of stuff - mostly empty folders, it's true - and removed them all. Great little tool - I shall keep it archived for another time. Thanks for the heads up.

I manually deleted more registry keys with 'Avira' in the name (carefully! - some are not related to Avira, or have 'avira' in the middle of their name quite by chance (Javavira.... for example). But there are still two keys 'Avira.Security' that won't be deleted, and Windows Defender is still a blank page with a shield logo on it, so presumably not functioning. Nothing happens when I ask it to scan a folder, using the context menu.. I'll see if I can reinstall it, if that's possible. Otherwise, rather than reinstall Avira, which has been a real pain to me, I guess will find a different anti-virus.

The PC is just used for flight simulation - no emails and I don't browse the internet on it, so it's low risk, but I do need some kind of virus protection on it of course: I would want the least invasive software (freeware) available - if anyone has recommendations?

Thank you to everyone who has replied to my plea for assistance! ;-)
 

My Computer My Computer

At a glance

Windows 11 23H2i9-11900KF64GB DDR4Asus ProArt RTX 4070 Ti Super 16GB
OS
Windows 11 23H2
Computer type
PC/Desktop
CPU
i9-11900KF
Motherboard
Intel Z590-PLUS
Memory
64GB DDR4
Graphics Card(s)
Asus ProArt RTX 4070 Ti Super 16GB
Hard Drives
1 x Evo 860 2TB + 2 x Evo 850 500GB SSDs
PSU
Corsair 850W
Cooling
Corsair H100i AIO
martinlest said:
I would want the least invasive software (freeware) available
Click to expand...

Windows Defender should be fine, with Malwarebytes free as a 2nd opinion.

Bitdefender free is also good.

www.bitdefender.com

Bitdefender Free Antivirus Software

Bitdefender Antivirus Free offers powerful antivirus protection that is light on any device's resources. The only free antivirus that you'll ever need!
www.bitdefender.com www.bitdefender.com
 

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    Win 11 Home ♦♦♦26200.8737 ♦♦♦♦♦♦♦25H2AMD Ryzen 7 3700XG.Skill (F4-3200C14D-16GTZKW)EVGA RTX 2070 (08G-P4-2171-KR)
    OS
    Win 11 Home ♦♦♦26200.8737 ♦♦♦♦♦♦♦25H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    Built by Ghot® [May 2020]
    CPU
    AMD Ryzen 7 3700X
    Motherboard
    Asus Pro WS X570-ACE (BIOS 5302)
    Memory
    G.Skill (F4-3200C14D-16GTZKW)
    Graphics Card(s)
    EVGA RTX 2070 (08G-P4-2171-KR)
    Sound Card
    Realtek ALC1220P / ALC S1220A
    Monitor(s) Displays
    Dell U3011 30"
    Screen Resolution
    2560 x 1600
    Hard Drives
    2x Samsung 860 EVO 500GB,
    WD 4TB Black FZBX - SATA III,
    WD 8TB Black FZBX - SATA III,
    DRW-24B1ST CD/DVD Burner
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    PC Power & Cooling 750W Quad EPS12V
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    Cooler Master ATCS 840 Tower
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    CM Hyper 212 EVO (push/pull)
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    Ducky DK9008 Shine II Blue LED
    Mouse
    Logitech Optical M-100
    Internet Speed
    300/300
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    Firefox (latest)
    Antivirus
    Bitdefender Total Security
    Other Info
    Speakers: Klipsch Pro Media 2.1

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    Operating System
    Windows XP Pro 32bit w/SP3
    Computer type
    PC/Desktop
    Manufacturer/Model
    Built by Ghot® (not in use)
    CPU
    AMD Athlon 64 X2 5000+ (OC'd @ 3.2Ghz)
    Motherboard
    ASUS M2N32-SLI Deluxe Wireless Edition
    Memory
    TWIN2X2048-6400C4DHX (2 x 1GB, DDR2 800)
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    EVGA 256-P2-N758-TR GeForce 8600GT SSC
    Sound Card
    Onboard
    Monitor(s) Displays
    ViewSonic G90FB Black 19" Professional (CRT)
    Screen Resolution
    up to 2048 x 1536
    Hard Drives
    WD 36GB 10,000rpm Raptor SATA
    Seagate 80GB 7200rpm SATA
    Lite-On LTR-52246S CD/RW
    Lite-On LH-18A1P CD/DVD Burner
    PSU
    PC Power & Cooling Silencer 750 Quad EPS12V
    Case
    Generic Beige case, 80mm fans
    Cooling
    ZALMAN 9500A 92mm CPU Cooler
    Keyboard
    Logitech Classic Keybooard 200
    Mouse
    Logitech Optical M-BT96a
    Internet Speed
    300/300
    Browser
    Firefox 3.x ??
    Antivirus
    Symantec (Norton)
    Other Info
    Still assembled, still runs. Haven't turned it on for 15 years?
Windows Defender should be fine
Click to expand...
.. if I ever get it working again :unsure:. I have tried a repair, then a reset and reinstalled via 'Terminal' (Powershell); then run sfc... but although the Defender Firewall seems OK, Windows Security (Defender) still just brings up that blank page + logo... nothing happens and there are no options anywhere. I can't think what else I could do to get it back 😢

Bitdefender free is also good.
Click to expand...

(y)
 
Last edited:

My Computer My Computer

At a glance

Windows 11 23H2i9-11900KF64GB DDR4Asus ProArt RTX 4070 Ti Super 16GB
OS
Windows 11 23H2
Computer type
PC/Desktop
CPU
i9-11900KF
Motherboard
Intel Z590-PLUS
Memory
64GB DDR4
Graphics Card(s)
Asus ProArt RTX 4070 Ti Super 16GB
Hard Drives
1 x Evo 860 2TB + 2 x Evo 850 500GB SSDs
PSU
Corsair 850W
Cooling
Corsair H100i AIO
martinlest said:
.. if I ever get it working again :unsure:. I have tried a repair, then a reset and reinstalled via 'Terminal' (Powershell); then run sfc... but although the Defender Firewall seems OK, Windows Security (Defender) still just brings up that blank page + logo... nothing happens and there are no options anywhere. I can't think what else I could do to get it back
Click to expand...

If worse comes to worse, you may have to back up all your personal files and reimage your machine. There are various guides around here on how to do that.

Then start over using Defender or Bitdefender as an anti-virus program.

Then when such times as a program needs to be uninstalled in the future, use something like Revo and remove all trace of the program from your machine. That includes the associated program folders & registry keys associated with the program being uninstalled. That's also a good way to avoid all this from happening again.
 

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    Windows 11 Pro 25H2 build: (26200.7623)
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    Manufacturer/Model
    Microsoft Surface Pro
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    Dell Pro 14 - PC14250
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    Intel Core Ultra 7
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    64GB
    Graphics card(s)
    Intel Integrated Graphics
    Hard Drives
    Micron 1TB SSD
Make a backup first in the event of a failure.
Go to settings - system - recovery - Fix problems using Windows Update and select Reinstall now. Your apps, files and settings will be kept. It will take a while so be patient.
 

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System One System Two

  • At a glance

    Win 11 ProAMD Ryzen™ 7 7730U24GB Dual-Channel DDR4 @ 1596MHz (22-22-22-52)512MB ATI AMD Radeon Graphics (ASUStek Comput...
    OS
    Win 11 Pro
    Computer type
    Laptop
    Manufacturer/Model
    ASUS Vivobook
    CPU
    AMD Ryzen™ 7 7730U
    Motherboard
    M1605YA
    Memory
    24GB Dual-Channel DDR4 @ 1596MHz (22-22-22-52)
    Graphics Card(s)
    512MB ATI AMD Radeon Graphics (ASUStek Computer Inc)
    Monitor(s) Displays
    Generic PnP Monitor (1920x1200@60Hz) - P1 PLUS (1920x1080@59Hz)
    Screen Resolution
    1920 X 1200
    Hard Drives
    953GB Western Digital WD
    PSU
    45 Watts
    Mouse
    Lenovo Bluetooth.
    Internet Speed
    500 Mbps
    Browser
    Edge
    Antivirus
    Defender

  • At a glance

    Windows 11AMD Ryzen 7 5800H / 3.2 GHz32 GB DDR4 SDRAM 3200 MHzNVIDIA GeForce RTX 3060 6 GB GDDR6 SDRAM
    Operating System
    Windows 11
    Computer type
    Laptop
    Manufacturer/Model
    ACER NITRO
    CPU
    AMD Ryzen 7 5800H / 3.2 GHz
    Motherboard
    CZ Scala_CAS (FP6)
    Memory
    32 GB DDR4 SDRAM 3200 MHz
    Graphics card(s)
    NVIDIA GeForce RTX 3060 6 GB GDDR6 SDRAM
    Sound Card
    Realtek Audio. NVIDIA High Definition Audio
    Monitor(s) Displays
    15.6" LED backlight 1920 x 1080 (Full HD) 144 Hz
    Screen Resolution
    1920 x 1080 (Full HD)
    Hard Drives
    Samsung 970 Evo Plus 2TB NVMe M.2
    PSU
    180 Watt, 19.5 V
    Mouse
    Lenovo Bluetooth
    Internet Speed
    500 Mbps
    Browser
    Edge
    Antivirus
    Defender
Avira programs from Task Manager have you checked there to see if there are any entries referring to Avira? If you see any right click on any (if there) and open location file. Hopefully one of these will be the setup file which will allow you either re-install Or uninstall this app. Revo is a good uninstaller but this one is better and free called Geek uninstaller Geek Uninstaller Free
 

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At a glance

Windows 11 Pro 64 bit 2H25AMD Ryzen 5 5600X 6-Core Processor (3.70 GHz)Total Memory Size: 64 GBytes Current Memory C...Graphics card NVIDIA GeForce RTX 3060 Ti (8 GB)
OS
Windows 11 Pro 64 bit 2H25
Computer type
PC/Desktop
Manufacturer/Model
Asus
CPU
AMD Ryzen 5 5600X 6-Core Processor (3.70 GHz)
Motherboard
Motherboard Model: S TUF GAMING B550-PLUS WIFI II
Memory
Total Memory Size: 64 GBytes Current Memory Clock: 1181.1 MHzMemory Channels Supported: 2
Graphics Card(s)
Graphics card NVIDIA GeForce RTX 3060 Ti (8 GB)
Sound Card
Audio Adapter:AMD Family 17h/19h - HD Audio Controller Audio Codec Hardware ID:
Monitor(s) Displays
Monitor Name (Manuf): DELL G2724D
Screen Resolution
2560 x 1440 596 x 335 mm, Pixel Clock 241.50 MHz
Hard Drives
Standard NVM Express Controller
PSU
Don't Know
Case
Arnrouary
Cooling
6 gaming fans
Keyboard
Logi 5445
Mouse
Logi 510
Internet Speed
1.5 GB
Browser
FireFox
Antivirus
Avast Premium Serurity
Yes, I should have used Revo - I do have it. Too late now of course. I am not going to reimage the PC or take drastic measures. I have just spent two days moving my flight simulator setup from Windows 10 to Windows 11! I shall probably just install BitDefender and leave it at that. There are no traces of Avira on the drives (thanks to the 'Everything' app), nothing in Task Manager, nothing in Revo: I assume those two stubborn entries in the registry are what is stopping Defender from working, I can't see what else it would be.
 

My Computer My Computer

At a glance

Windows 11 23H2i9-11900KF64GB DDR4Asus ProArt RTX 4070 Ti Super 16GB
OS
Windows 11 23H2
Computer type
PC/Desktop
CPU
i9-11900KF
Motherboard
Intel Z590-PLUS
Memory
64GB DDR4
Graphics Card(s)
Asus ProArt RTX 4070 Ti Super 16GB
Hard Drives
1 x Evo 860 2TB + 2 x Evo 850 500GB SSDs
PSU
Corsair 850W
Cooling
Corsair H100i AIO
1) Add WMIC


Code: 
DISM /Online /Add-Capability /CapabilityName:WMIC~~~~

www.elevenforum.com

Add or Remove WMIC command Feature in Windows 11

This tutorial will show you how to add or remove the WMIC command as an optional feature for all users in Windows 11. The WMI command-line (WMIC) utility provides a command-line interface for Windows Management Instrumentation (WMI). WMIC is compatible with existing shells and utility commands...
www.elevenforum.com www.elevenforum.com




2) Run Tuneup plus > post a share link


Batch files for use in BSOD debugging - Windows 10 Help Forums

Information This thread is for use by the BSOD team to store batch files that can be used to collect additional data, fix settings or anything else that is useful in debugging BSOD problems in Windows 10. The way I see it working is the first
www.tenforums.com www.tenforums.com

Batch files for use in BSOD debugging - Windows 10 Help Forums

Information This thread is for use by the BSOD team to store batch files that can be used to collect additional data, fix settings or anything else that is useful in debugging BSOD problems in Windows 10. The way I see it working is the first
www.tenforums.com www.tenforums.com




3) Run the V2 log collector > post a share link

www.elevenforum.com

BSOD - Posting Instructions

BSOD - Posting Instructions This will show you how to help provide needed information about your system and dump files. It will not contain any personal or sensitive information about you or your data. To get better help with your Windows BSOD issue, please read these instructions and follow...
www.elevenforum.com www.elevenforum.com




4) Open administrative command prompt and type or copy and paste:

fltmc

Post a share link
 

My Computer My Computer

At a glance

Windows 10Intel(R) Core(TM) i7-4800MQ CPU @ 2.70GHz16 GB Total: Manufacturer : Samsung MemoryTyp...NVIDIA Quadro K3100M; Intel(R) HD Graphics 4600
OS
Windows 10
Computer type
Laptop
Manufacturer/Model
HP
CPU
Intel(R) Core(TM) i7-4800MQ CPU @ 2.70GHz
Motherboard
Product : 190A Version : KBC Version 94.56
Memory
16 GB Total: Manufacturer : Samsung MemoryType : DDR3 FormFactor : SODIMM Capacity : 8GB Speed : 1600
Graphics Card(s)
NVIDIA Quadro K3100M; Intel(R) HD Graphics 4600
Sound Card
IDT High Definition Audio CODEC; PNP Device ID HDAUDIO\FUNC_01&VEN_111D&DEV_76E0
Hard Drives
Model Hitachi HTS727575A9E364
Antivirus
Microsoft Defender
Other Info
Mobile Workstation
Thank you, but I'm afraid that is all a bit 'above my pay grade'.

I managed to delete remaining Avira registry entries by using msconfig/selective startup, but no change to Defender as a result.
 

My Computer My Computer

At a glance

Windows 11 23H2i9-11900KF64GB DDR4Asus ProArt RTX 4070 Ti Super 16GB
OS
Windows 11 23H2
Computer type
PC/Desktop
CPU
i9-11900KF
Motherboard
Intel Z590-PLUS
Memory
64GB DDR4
Graphics Card(s)
Asus ProArt RTX 4070 Ti Super 16GB
Hard Drives
1 x Evo 860 2TB + 2 x Evo 850 500GB SSDs
PSU
Corsair 850W
Cooling
Corsair H100i AIO
Some advance: having found and deleted many Avira registry entries in safe mode (as above), I was able to reinstall te Avira Security - and then delete it with Revo. Unfortunately, Windows Defender still doesn't work: the window opens witrh just the shield logo and closes after about half a minute.

Incidentally, when I ran the 'Everything' program after Revo had finished, there were almost 100 instances of Avira folders/subfolders still on the hard drive. All gone now. Thank you 'Everything'!

Probably install BitDefender tomorrow and move on!
 

My Computer My Computer

At a glance

Windows 11 23H2i9-11900KF64GB DDR4Asus ProArt RTX 4070 Ti Super 16GB
OS
Windows 11 23H2
Computer type
PC/Desktop
CPU
i9-11900KF
Motherboard
Intel Z590-PLUS
Memory
64GB DDR4
Graphics Card(s)
Asus ProArt RTX 4070 Ti Super 16GB
Hard Drives
1 x Evo 860 2TB + 2 x Evo 850 500GB SSDs
PSU
Corsair 850W
Cooling
Corsair H100i AIO
martinlest said:
and then delete it with Revo
Click to expand...
Did you use the Advanced option for Revo when the uninstall was complete, without re-booting? Crucial.
 

My Computers My Computers

System One System Two

  • At a glance

    Windows 11 2xH2 (latest update ... forever anal)Intel i5-124008GBNVIDIA GeForce GT730
    OS
    Windows 11 2xH2 (latest update ... forever anal)
    Computer type
    PC/Desktop
    Manufacturer/Model
    HP Slim S01
    CPU
    Intel i5-12400
    Memory
    8GB
    Graphics Card(s)
    NVIDIA GeForce GT730
    Sound Card
    OOBE
    Monitor(s) Displays
    Acer 32"
    Screen Resolution
    1920x1080
    Hard Drives
    512GB KIOXIA NVMe
    1TB SATA SSD
    PSU
    OOBE
    Case
    OOBE
    Cooling
    OOBE
    Keyboard
    BT
    Mouse
    BT
    Browser
    Brave FFox Chrome Opera
    Antivirus
    KIS

  • At a glance

    Windows 11 Pro 2xH2 (latest update ... 4ever ...i7-1165G7 @ 2.80GHzIntel Iris Xe Graphics
    Operating System
    Windows 11 Pro 2xH2 (latest update ... 4ever anal)
    Computer type
    Laptop
    Manufacturer/Model
    HP Pavillion 15
    CPU
    i7-1165G7 @ 2.80GHz
    Graphics card(s)
    Intel Iris Xe Graphics
    Hard Drives
    Samsung NVMe 512GB
    + numerous/multiple SSD Type C USB enclosures
    Internet Speed
    NBN FTTN 50
    Browser
    Brave
    Antivirus
    KIS
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