Windows 10: Windows Defender Ransomware Protection - Error: Unauthorised Changes Blocked for App Added...

Discus and support Windows Defender Ransomware Protection - Error: Unauthorised Changes Blocked for App Added... in AntiVirus, Firewalls and System Security to solve the problem; I'm using: Windows 10 Pro 64-bit After the recent Windows update I am getting the following error when converting books in Calibre. [ATTACH] I... Discussion in 'AntiVirus, Firewalls and System Security' started by Miss Chief, Mar 28, 2019.

  1. Windows Defender Ransomware Protection - Error: Unauthorised Changes Blocked for App Added...


    I'm using: Windows 10 Pro 64-bit


    After the recent Windows update I am getting the following error when converting books in Calibre.

    Windows Defender Ransomware Protection - Error: Unauthorised Changes Blocked for App Added... f94970d1-c85d-4f1f-b668-89a4bea25296?upload=true.png


    I have added all the exe files in C:\Program Files\Calibre2 including calibre-parallel to the Allowed Apps list:


    Windows Defender Ransomware Protection - Error: Unauthorised Changes Blocked for App Added... 70de48b8-d772-4221-8e90-7c77f7f51d59?upload=true.png


    But the error is still coming up.


    I can't even exclude the directory in question as there is no option to add an excluded directory and apparently I cannot remove 'Documents' from the list.


    I looked in:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows Defender\Exploit Guard\Controlled Folder Access


    That only lists the apps and folders I have added.


    I had a look in the PowerShell get-MpPreference gives the following:


    AttackSurfaceReductionOnlyExclusions :

    AttackSurfaceReductionRules_Actions :

    AttackSurfaceReductionRules_Ids :

    CheckForSignaturesBeforeRunningScan : False

    CloudBlockLevel : 0

    CloudExtendedTimeout : 0

    ComputerID : ####X###-#X##-###X-####-####X#X#X###

    ControlledFolderAccessAllowedApplications : {C:\Program Files (x86)\...}

    ControlledFolderAccessProtectedFolders : {G:\Documents\...}

    DisableArchiveScanning : False

    DisableAutoExclusions : False

    DisableBehaviorMonitoring : False

    DisableBlockAtFirstSeen : False

    DisableCatchupFullScan : True

    DisableCatchupQuickScan : True

    DisableEmailScanning : True

    DisableIntrusionPreventionSystem :

    DisableIOAVProtection : False

    DisablePrivacyMode : False

    DisableRealtimeMonitoring : False

    DisableRemovableDriveScanning : True

    DisableRestorePoint : True

    DisableScanningMappedNetworkDrivesForFullScan : True

    DisableScanningNetworkFiles : False

    DisableScriptScanning : False

    EnableControlledFolderAccess : 1

    EnableNetworkProtection : 0

    ExclusionExtension :

    ExclusionPath : {G:\Documents\...}

    ExclusionProcess :

    HighThreatDefaultAction : 0

    LowThreatDefaultAction : 0

    MAPSReporting : 2

    ModerateThreatDefaultAction : 0

    PUAProtection : 0

    QuarantinePurgeItemsAfterDelay : 0

    RandomizeScheduleTaskTimes : True

    RealTimeScanDirection : 0

    RemediationScheduleDay : 0

    RemediationScheduleTime : 02:00:00

    ReportingAdditionalActionTimeOut : 10080

    ReportingCriticalFailureTimeOut : 10080

    ReportingNonCriticalTimeOut : 1440

    ScanAvgCPULoadFactor : 50

    ScanOnlyIfIdleEnabled : True

    ScanParameters : 1

    ScanPurgeItemsAfterDelay : 15

    ScanScheduleDay : 0

    ScanScheduleQuickScanTime : 00:00:00

    ScanScheduleTime : 02:00:00

    SevereThreatDefaultAction : 0

    SignatureAuGracePeriod : 0

    SignatureDefinitionUpdateFileSharesSources :

    SignatureDisableUpdateOnStartupWithoutEngine : False

    SignatureFallbackOrder : MicrosoftUpdateServer|MMPC

    SignatureFirstAuGracePeriod : 120

    SignatureScheduleDay : 8

    SignatureScheduleTime : 01:45:00

    SignatureUpdateCatchupInterval : 1

    SignatureUpdateInterval : 0

    SubmitSamplesConsent : 1

    ThreatIDDefaultAction_Actions : {6, 6}

    ThreatIDDefaultAction_Ids : {2147609988, 2147717281}

    UILockdown : False

    UnknownThreatDefaultAction : 0

    PSComputerName :


    Again there doesn't seem to be any option for excluding a folder or removing documents from the protected files.

    This is ridiculous, I have had to turn off this feature entirely just to use this program, I only installed the update 12 hours ago... how many more of my programs are going to have issues with this?


    Please advise of some way of removing Documents from the protected files list or someway of adding an exclusion, presumably this will require editing registry or group policies or perhaps some hidden PowerShell command? Alternatively please advise when a fix will be released so it actually allows apps in the Allowed Apps list?

    :)
     
    Miss Chief, Mar 28, 2019
    #1

  2. Unauthorised changes blocked

    receive notifications - Unauthorised changes blocked Controlled Folder Access blocked.

    How can problem be rectified? (Windows Defender Security Centre - Virus & Threat Protection)
     
    GlenGraetz, Mar 28, 2019
    #2
  3. Unauthorised changes blocked

    Controlled Folder Access is an enterprise-class ransomware protection component that was recently added to Windows Defender – and in most cases you should be able to simply allow your friendly apps through these “roadblocks” by just adding them to
    the authorized application list (whitelist) with the method described in the documentation. Many friendly apps have already been added to the default whitelist, and these will be allowed through without any hesitation – but unrecognized apps will still have
    to be allowed manually. This is actually pretty simple, and once you’ve successfully whitelisted an app, it will look easy in retrospect:

    https://cloudblogs.microsoft.com/mi...ting-your-data-with-controlled-folder-access/

    The Unauthorized changes blocked notification is preserved in the notification list until it’s dismissed – so just click on the notification icon at the far right of the notification area and then jot down the file path for the blocked
    app. Once you've noted the file path; click on the notification – and that will dismiss it, and then automatically launch the
    Allow an app through Controlled folder access window. Then all you have to do is click on the
    Add an allowed app button (+) and select the app’s executable in the
    Open dialog. Unfortunately, the TechNet and Windows IT Pro Center documentation doesn’t even bother to mention this handy little shortcut, but this humble Windows Support document actually sums it up quite nicely:

    If you see an App is blocked message when you try to use a familiar app, you can simply unblock the app. If this message displays:

    • Write down or take note of the path of the blocked app.
    • Select the message, and then select Add an allowed app.
    • Browse for the program you want to allow access.

    https://support.microsoft.com/en-us...t-protection-windows-defender-security-center

    The file path in the notification does tend to be truncated – but there’s usually enough of it there to locate the app without any trouble (it’s usually in the Program Files or Program Files (x86) directory). If the file path is truncated to the point
    where you can’t locate the blocked app in the Open dialog; then open Event Viewer; navigate to the
    Windows Defender Operational log; and locate the blocking event (Event ID 1123):

    1. Right-click on the Start button and select Event Viewer.

    2. Navigate to Applications and Services
    >
    Microsoft > Windows
    > Windows Defender > Operational


    3. Filter for (or just look for): Event ID
    1123


    Issues with this feature were fully anticipated – and that’s why it includes an Audit Mode, which allows users to monitor folder access activity without having anything blocked.

    Right-click on the Start button and select Windows PowerShell (Admin); and then copy, paste, and enter this command:

    Set-MpPreference -EnableControlledFolderAccess AuditMode

    https://docs.microsoft.com/en-us/wi...ploit-guard/evaluate-controlled-folder-access

    If you actually have trouble whitelisting your apps, you might want to turn off Controlled Folder Access for the time being and then try turning it back on again later – or better yet; just make sure that everything is properly backed up on a disconnected
    drive, and then you shouldn't really have to worry about turning it back on:

    https://cloudblogs.microsoft.com/mi...good-as-any-to-back-up-your-data/?source=mmpc
     
    GreginMich, Mar 28, 2019
    #3
  4. trparky Win User

    Windows Defender Ransomware Protection - Error: Unauthorised Changes Blocked for App Added...

    Say goodbye to ransomware with Windows 10 Fall Creators Update

    Yes, ransomware will be a thing of the past with Windows 10 Fall Creators Update thanks to something called "Controlled Folder Access" in Windows Defender.

    Windows 10 will hide your important files from ransomware soon | The Verge

    These are protections for your files against ransomware at the kernel and Windows Defender level. Rest easy, your files are safe.

    About damn time Microsoft!
     
    trparky, Mar 28, 2019
    #4
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Windows Defender Ransomware Protection - Error: Unauthorised Changes Blocked for App Added...

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