1Password was unable to complete installation - Windows 10

I'm having the same problem on the same OS. This is a fresh install on a new PC. I can install other programs.

Hello @JoeRobens and @beirne,

I'm sorry to hear of the troubles you've both been experiencing with the installation of 1Password 8 for Windows. I'm happy to assist.

The biggest reason we see this issue is due to 1Password being blocked by another program like Anti-Virus or Anti-Malware Software, such as Norton, McAfee, MalwareBytes, etc. Sometimes a pending Windows 10 update can also cause issues.

Could you try restarting Windows in Safe Mode with Networking Enabled and then try installing 1Password again to see if this helps with this behaviour?

If this helped, as a next step, you can try excluding the entire 1Password folder and the 1Password.exe in any security software you have running and then rebooting your device. This should help with future updates. The 1Password directory can be found here - %localappdata%\1Password and the 1Password.exe is here: %localappdata%\1Password\App\8.

If you run into any other troubles or these steps did not help, please let us know so we can investigate further. Thanks!

Thanks ag_mike_d.
Same behavior in Safe Mode with Networking.

I've moved to a new computer since then and it doesn't install on the new computer either. I wrote to support and they gave me the same advice, but unfortunately I'm not at liberty to go into safe mode and try those steps on the new computer.

Good morning @JoeRobens,

I'm sorry for the continued troubles with the installation of 1Password 8 for Windows. As a next step, I would suggest trying to temporarily disable any antivirus/antimalware software, restarting your machine, then attempting to install 1Password 8 again.

If the troubles persist, I'd like to ask you to send us some 1Password logs from your Windows device. Here's how to do that:
1. In the Windows search bar copy and paste the following and press enter: %LOCALAPPDATA%\1Password\logs\
1. Select everything in this folder, and then right-click and choose Send to > Compressed (zipped) folder.
1. Then, attach that zip file to an email message addressed to support+forum@1password.com.

With your email please include:
* A link to this thread: https://1password.community/discussion/137534/1password-was-unable-to-complete-installation-windows-10
* Your forum username: JoeRobens

@beirne - could you please try the same steps noted above with any antivirus/antimalware software and reboot your device before trying to reinstall 1Password 8? If you're still having troubles we'd like to you continue the conversation you mentioned with with our support team through the email you mentioned. Thanks!

@ag_mike_d For policy reasons I'm not able to disable the AV software on this computer. I've sent the logs up to 1Password support and they think the AV software is blocking it. They suggested just installing the extension instead, which I did and this should take care of most use cases on this computer.

Hello again @beirne,

I appreciate the quick reply and update here. It's great to hear that 1Password in the browser will be helpful for this device in this situation were policy is preventing you from disabling the AV software.

Thanks and have a great day!

Is there any solution. I want to use 1Password Windows Applications in company environment. But I can't disable AV because of company policies.

I'm just surprised that the installation works for some clients and not for others. Although the same AV solution is installed.
Moreover, there is no entry in the event log of the AV solution that proves the blocking of the installation or any files.

Hi @BurkhardZEISS! I'm sorry to hear that you're running into trouble installing 1Password in a company environment.

Are you able to test things out in Safe Mode, to see if the installation is able to go through there? This can help us to figure out whether something else on the device is interfering.

Alternately, are you allowed to request exclusions, rather than disabling the antivirus completely? If so, we usually recommend excluding both the below folder and file from antivirus scans, and then restarting before trying the installation again:

1. The entire installation folder, %LOCALAPPDATA%\1Password - full path: C:\Users\Username\AppData\Local\1Password\ where Username is replaced with your Windows username.

2. The exe file, 1Password.exe, found at: C:\Users\Username\AppData\Local\1Password\app\8\1Password.exe where Username is replaced with your Windows username.

I look forward to hearing from you!

Sorry, but these are the same questions that you have already asked everyone else and yet there is no solution to the problem.
But I like to repeat again everything that is here in the corresponding post:

• It is not possible to install in safe mode. These are company devices where this is not allowed.
• Deactivating the antivirus solution or defining exceptions is also not possible due to company security policies (I am squirming that this should be a solution approach, because there are company devices with the same AV solution where the installation works without problems).

Too bad, in the current version 1Password is unfortunately not usable in our company context.
While it is technically possible to use it via browser, it unfortunately does not allow you to make a local backup of the password database. And relying only on a 3rd party cloud service for such a mission critical application is not advisable.

By the way here is my installation log:

INFO 2023-06-16T13:02:25.071 main(ThreadId(1)) [1P:op-windows-starter\src\installer.rs:597] Setup logs path set to : C:\Users\$USER\AppData\Local\1Password\logs\setup
INFO 2023-06-16T13:02:25.094 main(ThreadId(1)) [1P:op-localization\src\lib.rs:227] system locale detected as 'en-DE'
INFO 2023-06-16T13:02:25.094 main(ThreadId(1)) [1P:op-localization\src\lib.rs:242] en-DE isn't directly supported; falling back to en
INFO 2023-06-16T13:02:25.094 main(ThreadId(1)) [1P:op-localization\src\lib.rs:253] selected translations for EN_US based on detected locale en
INFO 2023-06-16T13:02:26.419 main(ThreadId(1)) [1P:op-windows-starter\src\installer.rs:514] Starting fresh install to 81007041
INFO 2023-06-16T13:02:26.646 main(ThreadId(1)) [1P:op-windows-starter\src\installer.rs:281] Copying files to C:\Users\$USER\AppData\Local\1Password\update
INFO 2023-06-16T13:02:26.648 main(ThreadId(1)) [1P:op-windows-starter\src\transaction.rs:73] copying files to: C:\Users\$USER\AppData\Local\1Password\update\8
INFO 2023-06-16T13:02:28.935 main(ThreadId(1)) [1P:op-windows-starter\src\installer.rs:285] Renaming C:\Users\$USER\AppData\Local\1Password\app to C:\Users\$USER\AppData\Local\1Password\previous
INFO 2023-06-16T13:02:28.935 main(ThreadId(1)) [1P:op-windows-starter\src\transaction.rs:130] renaming C:\Users\$USER\AppData\Local\1Password\app to C:\Users\$USER\AppData\Local\1Password\previous
INFO 2023-06-16T13:02:29.112 main(ThreadId(1)) [1P:op-windows-starter\src\transaction.rs:172] renaming C:\Users\$USER\AppData\Local\1Password\app to C:\Users\$USER\AppData\Local\1Password\previous
INFO 2023-06-16T13:02:29.113 main(ThreadId(1)) [1P:op-windows-starter\src\installer.rs:289] Renaming C:\Users\$USER\AppData\Local\1Password\update to C:\Users\$USER\AppData\Local\1Password\app
INFO 2023-06-16T13:02:29.113 main(ThreadId(1)) [1P:op-windows-starter\src\transaction.rs:172] renaming C:\Users\$USER\AppData\Local\1Password\update to C:\Users\$USER\AppData\Local\1Password\app
ERROR 2023-06-16T13:02:29.115 main(ThreadId(1)) [1P:op-windows-starter\src\transaction.rs:59] failed to rollback rename of C:\Users\$USER\AppData\Local\1Password\app to C:\Users\$USER\AppData\Local\1Password\previous. Error: Os { code: 2, kind: NotFound, message: "The system cannot find the file specified." }
ERROR 2023-06-16T13:02:29.489 main(ThreadId(1)) [1P:op-windows-starter\src\installer.rs:162] failed to move app files. Error: Io(PermissionDenied)
INFO 2023-06-16T13:02:32.770 main(ThreadId(1)) [1P:op-windows-starter\src\installer.rs:359] starting C:\Users\$USER\AppData\Local\1Password\app\8\1Password.exe
ERROR 2023-06-16T13:02:32.773 main(ThreadId(1)) [1P:op-windows-starter\src\installer.rs:194] Failed to start previous app. Error: Os { code: 3, kind: NotFound, message: "The system cannot find the path specified." }
ERROR 2023-06-16T13:02:32.773 main(ThreadId(1)) [1P:foundation\op-windows\src\windows\controls\window_class.rs:244] Class still has open windows.