CF Clipboard constantly clearing itself.

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Ben_

167 discussion posts

ClipboardFusion (CF) keeps clearing its clipboard history automatically.
Details:

Uncertain Cause: Not sure if this is due to CF settings, a Windows conflict, or interference from another application.

I've also created a small powershell script to monitor and log events:

# Load necessary assemblies
Add-Type -AssemblyName System.Windows.Forms
Add-Type -AssemblyName PresentationFramework
Add-Type -AssemblyName PresentationCore
Add-Type -AssemblyName WindowsBase

# Define paths
$logFile = "$env:APPDATA\ClipboardClearMonitor.log"

# Ensure log file exists
if (-not (Test-Path $logFile)) {
    New-Item -ItemType File -Path $logFile -Force | Out-Null
}

# Log script start
$timestamp = Get-Date -Format "yyyy-MM-dd HH:mm:ss"
Add-Content -Path $logFile -Value "$timestamp - Script started."

# Display the log file path to the user
Write-Host "------------------------------------------------------------" -ForegroundColor Cyan
Write-Host "Clipboard monitoring started." -ForegroundColor Green
Write-Host "Log file: $logFile" -ForegroundColor Yellow
Write-Host "This window will display all clipboard changes." -ForegroundColor Green
Write-Host "------------------------------------------------------------" -ForegroundColor Cyan

# Notification function
function Show-WindowsNotification {
    param ([string]$message)
    try {
        [System.Windows.Forms.NotifyIcon]$n = New-Object System.Windows.Forms.NotifyIcon
        $n.Icon = [System.Drawing.SystemIcons]::Information
        $n.BalloonTipTitle = "Clipboard Alert"
        $n.BalloonTipText = $message
        $n.Visible = $true
        $n.ShowBalloonTip(10000)
        Start-Sleep -Seconds 10
        $n.Dispose()
    } catch {
        Write-Host "$(Get-Date -Format 'yyyy-MM-dd HH:mm:ss') - Notification error: $($_.Exception.Message)" -ForegroundColor Red
    }
}

# Clipboard reader
function Get-ClipboardContentSummary {
    try {
        $dataObj = [Windows.Forms.Clipboard]::GetDataObject()
        if ($dataObj -eq $null) {
            return "<null>"
        }
        $formats = $dataObj.GetFormats()
        if ($formats.Count -eq 0) {
            return "<empty>"
        }
        return ($formats -join ", ")
    } catch {
        $err = $_.Exception.Message
        $timestamp = Get-Date -Format "yyyy-MM-dd HH:mm:ss"
        $logEntry = "$timestamp - Clipboard access error: $err"
        Add-Content -Path $logFile -Value $logEntry
        Write-Host $logEntry -ForegroundColor Red
        return "<unreadable>"
    }
}

try {
    $lastClipboardSummary = Get-ClipboardContentSummary
    while ($true) {
        Start-Sleep -Seconds 1
        $currentSummary = Get-ClipboardContentSummary

        if ($currentSummary -ne $lastClipboardSummary) {
            $timestamp = Get-Date -Format "yyyy-MM-dd HH:mm:ss"
            $logEntry = "$timestamp - Clipboard changed: $lastClipboardSummary â†’ $currentSummary"
            Add-Content -Path $logFile -Value $logEntry
            Write-Host $logEntry

            if ($currentSummary -eq "<empty>" -or $currentSummary -eq "<null>" -or $currentSummary -eq "<unreadable>") {
                Show-WindowsNotification "Clipboard was cleared or inaccessible."
            }

            $lastClipboardSummary = $currentSummary
        }
    }
} catch {
    $timestamp = Get-Date -Format "yyyy-MM-dd HH:mm:ss"
    $logEntry = "$timestamp - FATAL ERROR: $($_.Exception.Message)"
    Add-Content -Path $logFile -Value $logEntry
    Write-Host $logEntry -ForegroundColor Red
    Pause
}

Pause

Output to log:

ClipboardClearMonitor.log
This window will display all clipboard changes.
------------------------------------------------------------
2025-07-17 12:43:57 - Clipboard changed: System.String, UnicodeText, Text, Locale, OEMText â†’ HTML Format, System.St
ring, UnicodeText, Text, Chromium internal source RFH token, Chromium internal source URL, Locale, OEMText
2025-07-17 12:44:18 - Clipboard changed: HTML Format, System.String, UnicodeText, Text, Chromium internal source RFH 
token, Chromium internal source URL, Locale, OEMText â†’ System.String, UnicodeText, Text, Locale, OEMText
2025-07-17 12:48:17 - Clipboard changed: System.String, UnicodeText, Text, Locale, OEMText â†’ <empty>
2025-07-17 12:49:25 - Clipboard changed: <empty> â†’ System.Drawing.Bitmap, Bitmap
2025-07-17 12:51:56 - Clipboard changed: System.Drawing.Bitmap, Bitmap â†’ HTML Format, System.String, UnicodeText, T
ext, Chromium internal source RFH token, Chromium internal source URL, Locale, OEMText
2025-07-17 12:53:40 - Clipboard changed: HTML Format, System.String, UnicodeText, Text, Chromium internal source RFH 
token, Chromium internal source URL, Locale, OEMText â†’ System.String, UnicodeText, Text, OEMText, CF_CLIPBOARDFUSIO
N_DATAOBJECT, CF_CLIPBOARDFUSION_ITEM_SET, CF_CLIPBOARDFUSION_SCRUBBED
2025-07-17 12:53:50 - Clipboard changed: System.String, UnicodeText, Text, OEMText, CF_CLIPBOARDFUSION_DATAOBJECT, CF
_CLIPBOARDFUSION_ITEM_SET, CF_CLIPBOARDFUSION_SCRUBBED â†’ HTML Format, System.String, UnicodeText, Text, Chromium in
ternal source RFH token, Chromium internal source URL, Locale, OEMText
2025-07-17 13:18:17 - Clipboard changed: HTML Format, System.String, UnicodeText, Text, Chromium internal source RFH 
token, Chromium internal source URL, Locale, OEMText â†’ System.Drawing.Bitmap, Bitmap
2025-07-17 13:21:02 - Clipboard changed: System.Drawing.Bitmap, Bitmap â†’ HTML Format, System.String, UnicodeText, T
ext, Chromium internal source RFH token, Chromium internal source URL, Locale, OEMText
2025-07-17 13:22:13 - Clipboard changed: HTML Format, System.String, UnicodeText, Text, Chromium internal source RFH 
token, Chromium internal source URL, Locale, OEMText â†’ System.String, UnicodeText, Text, OEMText, CF_CLIPBOARDFUSIO
N_DATAOBJECT, CF_CLIPBOARDFUSION_ITEM_SET, CF_CLIPBOARDFUSION_SCRUBBED
2025-07-17 13:23:08 - Clipboard changed: System.String, UnicodeText, Text, OEMText, CF_CLIPBOARDFUSION_DATAOBJECT, CF
_CLIPBOARDFUSION_ITEM_SET, CF_CLIPBOARDFUSION_SCRUBBED â†’ HTML Format, System.String, UnicodeText, Text, Chromium in
ternal source RFH token, Chromium internal source URL, Locale, OEMText
2025-07-17 13:24:38 - Clipboard changed: HTML Format, System.String, UnicodeText, Text, Chromium internal source RFH 
token, Chromium internal source URL, Locale, OEMText â†’ System.String, UnicodeText, Text, Chromium internal source R
FH token, Chromium internal source URL, Locale, OEMText
2025-07-17 13:27:12 - Clipboard changed: System.String, UnicodeText, Text, Chromium internal source RFH token, Chromi
um internal source URL, Locale, OEMText â†’ Rich Text Format, System.String, UnicodeText, Text

I'm unable to locate the culprit.

This issue began maybe a week or so ago, uncertain though, it could be a WU KB5062554 and KB5063706 recent updates. I've not uninstalled these yet.

I don’t like using WKey+V, the window doesn’t stay open, unlike ClipboardFusion, which works great.

• Attachment [protected]: ClipboardFusion - Copy.zip [5,625 bytes]

23 days ago (modified 23 days ago) • #1

Can you send me a screenshot of the ClipboardFusion Settings > Application Exceptions > Default Copy Settings Edit window?

23 days ago • #2

Ben_

167 discussion posts

uploaded

• Attachment [protected]: 20250718-July-W29_124316193_ClipboardFusion.png [35,624 bytes]

22 days ago (modified 22 days ago) • #3

Ben_

167 discussion posts

Version of clipc.dll KB52062554 was 19045.6093 (22H2). I did not verify this at the time of removing KB5062554.

Removed KB5062554 and the CF clipboard clearing issue has stopped.

KB5062554 likely modified or interfered with clipc.dll or system clipboard notification chains, causing clipboard flushing of third-party apps.

Current version and current version of clipc.dll

Edition    Windows 10 Pro
Version    22H2
Installed on   
OS build    19045.5965
Experience    Windows Feature Experience Pack 1000.19061.1000.0

(Get-Item "C:\Windows\System32\clipc.dll").VersionInfo | Format-List
(Get-Item "C:\Windows\System32\user32.dll").VersionInfo | Format-List

OriginalFilename  : ClipC.dll.mui
FileDescription   : Client Licensing Platform Client
ProductName       : Microsoft® Windows® Operating System
Comments          : 
CompanyName       : Microsoft Corporation
FileName          : C:\Windows\System32\clipc.dll
FileVersion       : 10.0.19041.1 (WinBuild.160101.0800)
ProductVersion    : 10.0.19041.1
IsDebug           : False
IsPatched         : False
IsPreRelease      : False
IsPrivateBuild    : False
IsSpecialBuild    : False
Language          : English (United States)
LegalCopyright    : © Microsoft Corporation. All rights reserved.
LegalTrademarks   : 
PrivateBuild      : 
SpecialBuild      : 
FileVersionRaw    : 10.0.19041.5915
ProductVersionRaw : 10.0.19041.5915

OriginalFilename  : user32
FileDescription   : Multi-User Windows USER API Client DLL
ProductName       : Microsoft® Windows® Operating System
Comments          : 
CompanyName       : Microsoft Corporation
FileName          : C:\Windows\System32\user32.dll
FileVersion       : 10.0.19041.1 (WinBuild.160101.0800)
ProductVersion    : 10.0.19041.1
IsDebug           : False
IsPatched         : False
IsPreRelease      : False
IsPrivateBuild    : False
IsSpecialBuild    : False
Language          : English (United States)
LegalCopyright    : © Microsoft Corporation. All rights reserved.
LegalTrademarks   : 
PrivateBuild      : 
SpecialBuild      : 
FileVersionRaw    : 10.0.19041.5737
ProductVersionRaw : 10.0.19041.5737

Hopefully you guys can get a fix out soon. With a little more digging KB5062554 has issues.

22 days ago (modified 20 days ago) • #4

Ben_

167 discussion posts

KB5062554 reinstalled itself. Searched in C:\Windows\Logs\CBS\CBS.log for clipc.dll and not present in the log.

Get-WmiObject -Class Win32_QuickFixEngineering | Where-Object { $_.HotFixID -eq "KB5062554" }

Source        Description      HotFixID      InstalledBy          InstalledOn               
------        -----------      --------      -----------          -----------               
            Security Update  KB5062554     NT AUTHORITY\SYSTEM  7/19/2025 12:00:00 AM

Current WinVer

Edition    Windows 10 Pro
Version    22H2
Installed on 
OS build    19045.6093
Experience    Windows Feature Experience Pack 1000.19062.1000.0

KB5062554 was expected to deliver and apply clipc.dll version 19045.6093 as part of the cumulative 19045.6093 update package. However, on this system, the file remains at version 19041.5915. Review of CBS.log confirms that clipc.dll was neither installed, replaced, skipped, nor referenced during servicing. This strongly indicates that Microsoft has silently removed clipc.dll from the revised KB5062554 payload.

(Get-Item "C:\Windows\System32\clipc.dll").VersionInfo | Format-List

OriginalFilename  : ClipC.dll.mui
CompanyName       : Microsoft Corporation
FileName          : C:\Windows\System32\clipc.dll
FileVersion       : 10.0.19041.1 (WinBuild.160101.0800)
ProductVersion    : 10.0.19041.1
FileVersionRaw    : 10.0.19041.5915
ProductVersionRaw : 10.0.19041.5915

Get-FileHash "C:\Windows\System32\clipc.dll" -Algorithm SHA256

Algorithm       Hash                                                                   Path                         
---------       ----                                                                   ----                         
SHA256          5BA68CEA987915B62788165C9CF7C8499869B9B6351D391AE9AE0F5E549D2DAB       C:\Windows\System32\clipc.dll

21 days ago (modified 21 days ago) • #5

I tested this with the KB5062649 update from July 22nd and it worked fine. Can you try updating and let me know if the issue persists?

15 days ago • #6

Ben_

167 discussion posts

Did you read my post?

11 days ago • #7

Indeed, we've tested across a few machines but we can't seem to reproduce it here, so it will be pretty difficult to fix. Interestingly the KB5062649 update that was released after you posted is still showing the Clipc.dll as version 10.0.19041.5915.

If you're still able to reproduce it after updating, please let us know and we'll take a look into it further

4 days ago • #8

Ben_

167 discussion posts

It's working fine here for the moment. I did not update to KB5062649, that is a preview. The version WU updated to is KB52062554.

At this point I'm updating KB5062649 (Preview), will see if clipc.dll gets updated to version 19045.6159

1 day ago • #9

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CF Clipboard constantly clearing itself.