[BUG] Failure to Auto-Update from v3.3.6 to v2026.1.0

[VSKPSBBVR]

Please confirm these before moving forward

• I have searched for my issue and have not found a work-in-progress/duplicate/resolved issue.
• I have tested that this issue has not been fixed in the latest (beta or stable) release.
• I have checked the FAQ section for solutions.
• This issue is about a bug (if it is not, please use the correct template).

UniGetUI Version

3.3.6

Windows version, edition, and architecture

Windows 11 Home 25H2 26200.8037 x64

Describe your issue

The auto-updater in version 3.3.6 fails to update UnigetUI to the new version with the error, "The installer authenticity could not be verified. The update process has been aborted." Preventing the update to the latest version.

Steps to reproduce the issue

No response

UniGetUI Log

[3/16/2026 12:15:38 AM]    __  __      _ ______     __  __  ______
                          / / / /___  (_) ____/__  / /_/ / / /  _/
                         / / / / __ \/ / / __/ _ \/ __/ / / // /
                        / /_/ / / / / / /_/ /  __/ /_/ /_/ // /
                        \____/_/ /_/_/\____/\___/\__/\____/___/
                            Welcome to UniGetUI Version 3.3.6
[3/16/2026 12:15:38 AM]
[3/16/2026 12:15:38 AM] Build 104
[3/16/2026 12:15:38 AM] Data directory C:\Users\subha\AppData\Local\UniGetUI
[3/16/2026 12:15:38 AM] Encoding Code Page set to 437
[3/16/2026 12:15:38 AM] Loaded language locale: en
[3/16/2026 12:15:38 AM] Could not retrieve token (it may not exist): Element not found.
                        
                        Cannot get credential from Vault
[3/16/2026 12:15:38 AM] Randomly-generated background API auth token: lvc577r7excgrz7g6id3h80c4j0njxezd3yrigugpm1wbnutzg3yf8ifuezrf5iw
[3/16/2026 12:15:38 AM] Lang files were updated successfully from GitHub
[3/16/2026 12:15:38 AM] Chocolatey is enabled and was found on C:\Users\subha\AppData\Local\UniGetUI\Chocolatey\choco.exe
[3/16/2026 12:15:38 AM] Call to WhichMultiple with file pwsh.exe returned non-zero status 1
[3/16/2026 12:15:38 AM] Command pwsh.exe was not found on the system
[3/16/2026 12:15:38 AM] Call to WhichMultiple with file npm.ps1 returned non-zero status 1
[3/16/2026 12:15:38 AM] Command npm.ps1 was not found on the system
[3/16/2026 12:15:38 AM] Npm is enabled but was not found on the system!
[3/16/2026 12:15:38 AM] Pip is enabled and was found on C:\Users\subha\AppData\Local\Microsoft\WindowsApps\python.exe
[3/16/2026 12:15:38 AM] Call to WhichMultiple with file cargo.exe returned non-zero status 1
[3/16/2026 12:15:38 AM] Command cargo.exe was not found on the system
[3/16/2026 12:15:38 AM] Cargo is enabled but was not found on the system!
[3/16/2026 12:15:38 AM] Call to WhichMultiple with file vcpkg.exe returned non-zero status 1
[3/16/2026 12:15:38 AM] Command vcpkg.exe was not found on the system
[3/16/2026 12:15:38 AM] Call to WhichMultiple with file pwsh.exe returned non-zero status 1
[3/16/2026 12:15:38 AM] Command pwsh.exe was not found on the system
[3/16/2026 12:15:38 AM] PowerShell7 is enabled but was not found on the system!
[3/16/2026 12:15:38 AM] Api running on http://localhost:7058
[3/16/2026 12:15:38 AM] PowerShell is enabled and was found on C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
[3/16/2026 12:15:39 AM] Call to WhichMultiple with file scoop.ps1 returned non-zero status 1
[3/16/2026 12:15:39 AM] Command scoop.ps1 was not found on the system
[3/16/2026 12:15:39 AM] Scoop is enabled but was not found on the system!
[3/16/2026 12:15:39 AM] .NET Tool is enabled but was not found on the system!
[3/16/2026 12:15:39 AM] Call to WhichMultiple with file vcpkg returned non-zero status 1
[3/16/2026 12:15:39 AM] Command vcpkg was not found on the system
[3/16/2026 12:15:39 AM] An error occurred while initialising package manager Pip
[3/16/2026 12:15:39 AM] System.Exception: Microsoft Store python alias is not a valid python install
                           at UniGetUI.PackageEngine.Managers.PipManager.Pip._loadManagerVersion(String& version) in C:\SomePrograms\WingetUI-Store\src\UniGetUI.PackageEngine.Managers.Pip\Pip.cs:line 379
                           at UniGetUI.PackageEngine.ManagerClasses.Manager.PackageManager.Initialize() in C:\SomePrograms\WingetUI-Store\src\UniGetUI.PackageEngine.PackageManagerClasses\Manager\PackageManager.cs:line 82
[3/16/2026 12:15:39 AM] Call to WhichMultiple with file vcpkg returned non-zero status 1
[3/16/2026 12:15:39 AM] Command vcpkg was not found on the system
[3/16/2026 12:15:39 AM] Vcpkg root was not found. Please define the %VCPKG_ROOT% environment variable or define it from UniGetUI Settings
[3/16/2026 12:15:39 AM] vcpkg is enabled but was not found on the system!
[3/16/2026 12:15:39 AM] Winget is enabled and was found on C:\Users\subha\AppData\Local\Microsoft\WindowsApps\winget.exe
[3/16/2026 12:15:39 AM] ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄
                        █▀▀▀▀▀▀▀▀▀▀▀▀▀ MANAGER LOADED ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀
                        █ Name: PowerShell 5.x (aka PowerShell)
                        █ Executable name: "powershell.exe"
                        █ Executable path: "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"
                        █ Call arguments: " -NoProfile -Command"
                        █ Version: Name                           Value                                                                                   
                        █          ----                           -----                                                                                   
                        █          PSVersion                      5.1.26100.7920                                                                          
                        █          PSEdition                      Desktop                                                                                 
                        █          PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0...}                                                                 
                        █          BuildVersion                   10.0.26100.7920                                                                         
                        █          CLRVersion                     4.0.30319.42000                                                                         
                        █          WSManStackVersion              3.0                                                                                     
                        █          PSRemotingProtocolVersion      2.3                                                                                     
                        █          SerializationVersion           1.1.0.1
                        █          
                        █ PowerShell 5.x is enabled and ready to go.
                        ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀
[3/16/2026 12:15:39 AM] ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄
                        █▀▀▀▀▀▀▀▀▀▀▀▀▀ MANAGER LOADED ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀
                        █ Name: WinGet (aka Winget)
                        █ Executable name: "winget.exe"
                        █ Executable path: "C:\Users\subha\AppData\Local\Microsoft\WindowsApps\winget.exe"
                        █ Call arguments: ""
                        █ Version: System WinGet (CLI) Version: v1.28.220
                        █          Using Native WinGet helper (COM Api)
                        █          
                        █ WinGet is enabled and ready to go.
                        ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀
[3/16/2026 12:15:40 AM] ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄
                        █▀▀▀▀▀▀▀▀▀▀▀▀▀ MANAGER LOADED ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀
                        █ Name: Chocolatey (aka Chocolatey)
                        █ Executable name: "choco.exe"
                        █ Executable path: "C:\Users\subha\AppData\Local\UniGetUI\Chocolatey\choco.exe"
                        █ Call arguments: ""
                        █ Version: 2.4.3
                        █          
                        █ Chocolatey is enabled and ready to go.
                        ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀
[3/16/2026 12:15:40 AM] UniGetUI Chocolatey was found in the path
[3/16/2026 12:15:41 AM] LoadComponentsAsync finished executing. All managers loaded. Proceeding to interface.
[3/16/2026 12:15:43 AM] Found 0 available updates from Chocolatey
[3/16/2026 12:15:43 AM] Integrity check passed successfully!
[3/16/2026 12:15:43 AM] Found 0 installed packages from Chocolatey
[3/16/2026 12:15:44 AM] Found 0 installed packages from PowerShell
[3/16/2026 12:15:44 AM] Found 0 installed packages from PowerShell
[3/16/2026 12:15:44 AM] Found 0 available updates from PowerShell
[3/16/2026 12:15:47 AM] An update to UniGetUI version 3.3.7 is available
[3/16/2026 12:15:48 AM] Hash mismatch.
                        Expected: 511DBEEA55491205EA053306E5AE1CF692683F6EA2C6162A7029D12B00C79626
                        Got:      4031377d3a1fc902297425478ad0530e963c6de12da49aa131c56887c3ca4c9e
[3/16/2026 12:15:50 AM] Downloaded new icons and screenshots successfully!
[3/16/2026 12:15:52 AM] Hash mismatch.
                        Expected: 511DBEEA55491205EA053306E5AE1CF692683F6EA2C6162A7029D12B00C79626
                        Got:      4031377d3a1fc902297425478ad0530e963c6de12da49aa131c56887c3ca4c9e
[3/16/2026 12:15:55 AM] Found 0 available updates from Winget
[3/16/2026 12:15:55 AM] Found 141 installed packages from Winget
[3/16/2026 12:15:56 AM] Could not parse Images array from Microsoft Store response

Package Managers Logs

Manager WinGet with version:
System WinGet (CLI) Version: v1.28.220
Using Native WinGet helper (COM Api)

——————————————————————————————————————————


Logged native task on manager Winget. Task type is ListSources
Process start time: 3/16/2026 12:15:39 AM
Process end time:   3/16/2026 12:15:39 AM

-- Task information
 ...

The task reported success

——————————————————————————————————————————

Logged subprocess-based task on manager Winget. Task type is RefreshIndexes
Subprocess executable: "C:\Users\subha\AppData\Local\Microsoft\WindowsApps\winget.exe"
Command-line arguments: " source update --disable-interactivity "
Process start time: 3/16/2026 12:15:41 AM
Process end time:   3/16/2026 12:15:51 AM

-- Process STDOUT
 ...

Return code: SUCCESS (0)

——————————————————————————————————————————

Logged native task on manager Winget. Task type is ListInstalledPackages
Process start time: 3/16/2026 12:15:41 AM
Process end time:   3/16/2026 12:15:55 AM

-- Task information
 ...

The task reported success

——————————————————————————————————————————

Logged native task on manager Winget. Task type is OtherTask
Process start time: 3/16/2026 12:15:41 AM
Process end time:   3/16/2026 12:15:54 AM

-- Task information
 ...

The task reported success

——————————————————————————————————————————

Logged native task on manager Winget. Task type is ListUpdates
Process start time: 3/16/2026 12:15:51 AM
Process end time:   3/16/2026 12:15:55 AM

The task reported success

——————————————————————————————————————————

Relevant information

No response

Screenshots and videos

[mamoreau-devolutions]

This is a bit odd, since 2026.1.0 is not yet flagged for auto-update in older 3.3.x releases. It does seem to be trying to updating to 3.3.7 but failing to validate the hash. The expected behavior would be that it updates to 3.3.7, but we haven't changed anything in past releases, so I'll have to try it out and see where it's pulling its hash from to compare, and what the right hash is supposed to be.

[mamoreau-devolutions]

I just tried 3.3.6, it detected 3.3.7 as the next version to update to, and it did so successfully:

I have a feeling that the issue you encountered might have been transient. It's not supposed to try updating to 2026.1.0 yet. The update check in 3.3.x is done using https://www.marticliment.com/versions/unigetui/stable.ver

Right now, this is what the update file contains:

106
////
511DBEEA55491205EA053306E5AE1CF692683F6EA2C6162A7029D12B00C79626
////
3.3.7

From your logs, it is comparing against the proper hash, so I suspect you have a corrupted download. I'll close this issue, since it's working as expected, and unable to reproduce. You can re-open an issue after the auto-update for the Devolutions builds have been enabled, if the issue comes back.

[steve07099]

I too have received the exact same error message and am also on 3.3.6 and am also getting a hash mismatch error.

[3/19/2026 11:22:36 AM] Checking updater hash on location C:\Users\steve.STEVES-DESKTOP\AppData\Local\UniGetUI\UniGetUI Updater.exe
[3/19/2026 11:22:37 AM] Hash mismatch.
Expected: 511DBEEA55491205EA053306E5AE1CF692683F6EA2C6162A7029D12B00C79626
Got: 2f8ade36c3e0badd7e40a42f48d0a9fbb30043292ab31387732951a3b540612a
[3/19/2026 11:25:37 AM] DWM Thread was already running
[3/19/2026 11:25:37 AM] XAML Thread was already running
[3/19/2026 11:32:37 AM] Begin check for updates on endpoint https://www.marticliment.com/versions/unigetui/stable.ver
[3/19/2026 11:32:37 AM] Got response from endpoint: (106, 3.3.7, 511DBEEA55491205EA053306E5AE1CF692683F6EA2C6162A7029D12B00C79626)
[3/19/2026 11:32:37 AM] An update to UniGetUI version 3.3.7 is available
[3/19/2026 11:32:37 AM] Checking updater hash on location C:\Users\steve.STEVES-DESKTOP\AppData\Local\UniGetUI\UniGetUI Updater.exe
[3/19/2026 11:32:37 AM] Hash mismatch.
Expected: 511DBEEA55491205EA053306E5AE1CF692683F6EA2C6162A7029D12B00C79626
Got: 2f8ade36c3e0badd7e40a42f48d0a9fbb30043292ab31387732951a3b540612a
[3/19/2026 11:32:37 AM] Downloading installer from https://github.com/marticliment/UniGetUI/releases/latest/download/UniGetUI.Installer.exe to C:\Users\steve.STEVES-DESKTOP\AppData\Local\UniGetUI\UniGetUI Updater.exe
[3/19/2026 11:32:39 AM] The download has finished successfully
[3/19/2026 11:32:39 AM] Checking updater hash on location C:\Users\steve.STEVES-DESKTOP\AppData\Local\UniGetUI\UniGetUI Updater.exe
[3/19/2026 11:32:40 AM] Hash mismatch.
Expected: 511DBEEA55491205EA053306E5AE1CF692683F6EA2C6162A7029D12B00C79626
Got: 2f8ade36c3e0badd7e40a42f48d0a9fbb30043292ab31387732951a3b540612a
[3/19/2026 11:34:14 AM] DWM Thread was already running
[3/19/2026 11:34:14 AM] XAML Thread was already running

The file hash is confirmed.

PS C:\Users\steve.STEVES-DESKTOP\AppData\Local\UniGetUI> Get-FileHash "UniGetUI Updater.exe"

Algorithm Hash Path

---

SHA256 2F8ADE36C3E0BADD7E40A42F48D0A9FBB30043292AB31387732951A3B540612A C:\Users\steve.STEVES-DESKTOP\AppData\Local\UniGetUI\UniGetUI Updater.exe

I noticed when I tried to go to https://github.com/marticliment/UniGetUI/releases/latest it redirected me to https://github.com/Devolutions/UniGetUI/releases/tag/v2026.1.3 and when I looked at the checksums.txt file, I saw the hash that was returned above. Therefore, I think the downloader is trying to download v2026.1.3 rather than 3.3.7.

2F8ADE36C3E0BADD7E40A42F48D0A9FBB30043292AB31387732951A3B540612A UniGetUI.Installer.exe
2F8ADE36C3E0BADD7E40A42F48D0A9FBB30043292AB31387732951A3B540612A UniGetUI.Installer.x64.exe

[b-strauss]

I have exactly the same issue. I have had this app installed for a long time, but i guess after the owner change, not for much longer...

[20.03.2026 12:32:34] An update to UniGetUI version 3.3.7 is available
[20.03.2026 12:32:34] Hash mismatch.
                      Expected: 511DBEEA55491205EA053306E5AE1CF692683F6EA2C6162A7029D12B00C79626
                      Got:      2f8ade36c3e0badd7e40a42f48d0a9fbb30043292ab31387732951a3b540612a
[20.03.2026 12:32:37] Hash mismatch.
                      Expected: 511DBEEA55491205EA053306E5AE1CF692683F6EA2C6162A7029D12B00C79626
                      Got:      2f8ade36c3e0badd7e40a42f48d0a9fbb30043292ab31387732951a3b540612a
[20.03.2026 12:32:54] An update to UniGetUI version 3.3.7 is available
[20.03.2026 12:32:54] Hash mismatch.
                      Expected: 511DBEEA55491205EA053306E5AE1CF692683F6EA2C6162A7029D12B00C79626
                      Got:      2f8ade36c3e0badd7e40a42f48d0a9fbb30043292ab31387732951a3b540612a
[20.03.2026 12:32:57] Hash mismatch.
                      Expected: 511DBEEA55491205EA053306E5AE1CF692683F6EA2C6162A7029D12B00C79626
                      Got:      2f8ade36c3e0badd7e40a42f48d0a9fbb30043292ab31387732951a3b540612a