BUG: Flow Launcher got an error while trying to update plugins.

[GAC-Machine]

Checks

• [x] I have checked that this issue has not already been reported.

• [x] I am using the latest version of Flow Launcher.

• [ ] I am using the prerelease version of Flow Launcher.

Problem Description

I was trying to update plugins installed (using the plugin manager add-ons, via pm update command), but got this problem several times.

To Reproduce

1. Install Plugin Manager addons.
2. Run (after having installed a numerous number of plugins) the addons via pm update command.
3. See the issue (does not happen all the time, but quite often).

Screenshots

No response

Flow Launcher Version

1.20.2

Windows Build Number

10.0.22631.5624

Error Log

As shown in the instruction

Please open new issue in https://github.com/Flow-Launcher/Flow.Launcher/issues

1. Upload log file: C:\Users[user]\AppData\Roaming\FlowLauncher\Logs\1.20.2\2025-07-25.txt
2. Copy below exception message

File

2025-07-25.txt

Exception message

Flow Launcher version: 1.20.2
OS Version: 22631.5624
IntPtr Length: 8
x64: True

Python Path: C:\Users\[user]\AppData\Roaming\FlowLauncher\Environments\Python\PythonEmbeddable-v3.11.4\pythonw.exe
Node Path: C:\Users\[user]\AppData\Roaming\FlowLauncher\Environments\Node.js\Node-v16.18.0\node-v16.18.0-win-x64\node.exe

Date: 07/25/2025 08:41:57
Exception:
System.Net.WebException: The remote server returned an error: (666) .
   at System.Net.HttpWebRequest.EndGetResponse(IAsyncResult asyncResult)
   at MS.Internal.WpfWebRequestHelper.EndGetResponse(WebRequest request, IAsyncResult ar)
   at System.Windows.Navigation.NavigationService.HandleWebResponse(IAsyncResult ar)
   at System.Windows.Navigation.NavigationService.<>c__DisplayClass102_0.<HandleWebResponseOnRightDispatcher>b__0(Object unused)
   at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
   at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)