What are these CAB_nnnn_2,3,4,5,6 files in C:\Windows\Temp?


  1. Posts : 2,752
    Windows 7 Pro x64 (1), Win7 Pro X64 (2)
       #1

    What are these CAB_nnnn_2,3,4,5,6 files in C:\Windows\Temp?


    I have observed the every-few-hours creation of files in the C:\Windows\Temp folder of both my sister and brother-in-law's Win7 Pro x64 machines (Lenovo M93p both), which are on the same LAN in their house. They eventually consume all available free space on C, and other programs needing space then fail.

    I have to delete the contents of C:\Windows\Temp to get things back to normal, but the process simply restarts and a day or two later the C partition is once again fully consumed with these file. And weirdly this is happening on both machines (which of course are essentially set up identically, both with MSE and MBAM installed).

    We're talking about file names starting with CAB, created as shown in the following screenshot (sorted into reverse chronological sequence, newest first):



    I have a hunch these are somehow related to either Microsoft Security Essentials (and perhaps downloading of virus definition files? or log files??) or Malwarebytes Anti-Malware.

    There are also two LOG files stored in the same C:\Windows\Temp folder, and I believe these are very relevant to explaining the mystery. I will post these two log files as "code".

    (a) MpCmdRun.log

    Code:
    -------------------------------------------------------------------------------------
    MpCmdRun: Command Line: "C:\Program Files\Microsoft Security Client\\MpCmdRun.exe" SignatureUpdate -ScheduleJob -ISU -RestrictPrivileges
     Start Time: ‎Wed ‎Nov ‎09 ‎2016 22:51:56
    
    Run as Network Service
    MpCmdRun: End Time: ‎Wed ‎Nov ‎09 ‎2016 22:51:56
    -------------------------------------------------------------------------------------
    
    
    -------------------------------------------------------------------------------------
    MpCmdRun: Command Line: "C:\Program Files\Microsoft Security Client\\MpCmdRun.exe" SignaturesUpdateService -ScheduleJob -UnmanagedUpdate
     Start Time: ‎Wed ‎Nov ‎09 ‎2016 22:51:56
    
    Start: Signatures Update Service
    Update Started
    Search Started (MU/WU update) (Path: http://www.microsoft.com)...
    Search Completed 
    Download Started...
    Time Info - ‎Wed ‎Nov ‎09 ‎2016 22:52:12 Download Progress-
     Update Index:0 of 1 - 0%
    Download Progress-
     Update Index:0 of 1 - 100%
    Download Progress-
     Update Index:0 of 1 - 100%
    Download Completed 
    Download Completed 
    Installation Started...
    Time Info - ‎Wed ‎Nov ‎09 ‎2016 22:52:43 Installation Progress-
     Percent Complete:100,
     Current Update Index:0 (of 1)
    Installation Progress-
     Percent Complete:100,
     Current Update Index:0 (of 1)
    Installation Completed 
    Update completed succesfully
    End: Signatures Update Service
    MpCmdRun: End Time: ‎Wed ‎Nov ‎09 ‎2016 22:52:43
    -------------------------------------------------------------------------------------
    
    
    -------------------------------------------------------------------------------------
    MpCmdRun: Command Line: "C:\Program Files\Microsoft Security Client\\MpCmdRun.exe" SignatureUpdate -ScheduleJob -ISU -RestrictPrivileges
     Start Time: ‎Thu ‎Nov ‎10 ‎2016 00:51:55
    
    Run as Network Service
    MpCmdRun: End Time: ‎Thu ‎Nov ‎10 ‎2016 00:51:55
    -------------------------------------------------------------------------------------
    
    
    -------------------------------------------------------------------------------------
    MpCmdRun: Command Line: "C:\Program Files\Microsoft Security Client\\MpCmdRun.exe" SignaturesUpdateService -ScheduleJob -UnmanagedUpdate
     Start Time: ‎Thu ‎Nov ‎10 ‎2016 00:51:55
    
    Start: Signatures Update Service
    Update Started
    Search Started (MU/WU update) (Path: http://www.microsoft.com)...
    Search Completed 
    Download Started...
    Time Info - ‎Thu ‎Nov ‎10 ‎2016 00:52:10 Download Progress-
     Update Index:0 of 1 - 0%
    Download Progress-
     Update Index:0 of 1 - 100%
    Download Progress-
     Update Index:0 of 1 - 100%
    Download Completed 
    Download Completed 
    Installation Started...
    Time Info - ‎Thu ‎Nov ‎10 ‎2016 00:52:41 Installation Progress-
     Percent Complete:100,
     Current Update Index:0 (of 1)
    Installation Progress-
     Percent Complete:100,
     Current Update Index:0 (of 1)
    Installation Completed 
    Update completed succesfully
    End: Signatures Update Service
    MpCmdRun: End Time: ‎Thu ‎Nov ‎10 ‎2016 00:52:41
    -------------------------------------------------------------------------------------
    
    
    -------------------------------------------------------------------------------------
    MpCmdRun: Command Line: "C:\Program Files\Microsoft Security Client\\MpCmdRun.exe" SignatureUpdate -ScheduleJob -ISU -RestrictPrivileges
     Start Time: ‎Thu ‎Nov ‎10 ‎2016 02:51:55
    
    Run as Network Service
    MpCmdRun: End Time: ‎Thu ‎Nov ‎10 ‎2016 02:51:55
    -------------------------------------------------------------------------------------
    
    
    -------------------------------------------------------------------------------------
    MpCmdRun: Command Line: "C:\Program Files\Microsoft Security Client\\MpCmdRun.exe" SignaturesUpdateService -ScheduleJob -UnmanagedUpdate
     Start Time: ‎Thu ‎Nov ‎10 ‎2016 02:51:55
    
    Start: Signatures Update Service
    Update Started
    Search Started (MU/WU update) (Path: http://www.microsoft.com)...
    Search Completed 
    Update completed succesfully. no updates needed
    End: Signatures Update Service
    MpCmdRun: End Time: ‎Thu ‎Nov ‎10 ‎2016 02:51:57
    -------------------------------------------------------------------------------------
    
    
    -------------------------------------------------------------------------------------
    MpCmdRun: Command Line: "C:\Program Files\Microsoft Security Client\\MpCmdRun.exe" SignatureUpdate -ScheduleJob -ISU -RestrictPrivileges
     Start Time: ‎Thu ‎Nov ‎10 ‎2016 04:51:55
    
    Run as Network Service
    MpCmdRun: End Time: ‎Thu ‎Nov ‎10 ‎2016 04:51:55
    -------------------------------------------------------------------------------------
    
    
    -------------------------------------------------------------------------------------
    MpCmdRun: Command Line: "C:\Program Files\Microsoft Security Client\\MpCmdRun.exe" SignaturesUpdateService -ScheduleJob -UnmanagedUpdate
     Start Time: ‎Thu ‎Nov ‎10 ‎2016 04:51:55
    
    Start: Signatures Update Service
    Update Started
    Search Started (MU/WU update) (Path: http://www.microsoft.com)...
    Search Completed 
    Download Started...
    Time Info - ‎Thu ‎Nov ‎10 ‎2016 04:52:12 Download Progress-
     Update Index:0 of 1 - 0%
    Download Progress-
     Update Index:0 of 1 - 100%
    Download Progress-
     Update Index:0 of 1 - 100%
    Download Completed 
    Download Completed 
    Installation Started...
    Time Info - ‎Thu ‎Nov ‎10 ‎2016 04:52:53 Installation Progress-
     Percent Complete:100,
     Current Update Index:0 (of 1)
    Installation Progress-
     Percent Complete:100,
     Current Update Index:0 (of 1)
    Installation Completed 
    Update completed succesfully
    End: Signatures Update Service
    MpCmdRun: End Time: ‎Thu ‎Nov ‎10 ‎2016 04:52:53
    -------------------------------------------------------------------------------------
    
    
    -------------------------------------------------------------------------------------
    MpCmdRun: Command Line: "C:\Program Files\Microsoft Security Client\\MpCmdRun.exe" SignatureUpdate -ScheduleJob -ISU -RestrictPrivileges
     Start Time: ‎Thu ‎Nov ‎10 ‎2016 06:51:55
    
    Run as Network Service
    MpCmdRun: End Time: ‎Thu ‎Nov ‎10 ‎2016 06:51:55
    -------------------------------------------------------------------------------------
    
    
    -------------------------------------------------------------------------------------
    MpCmdRun: Command Line: "C:\Program Files\Microsoft Security Client\\MpCmdRun.exe" SignaturesUpdateService -ScheduleJob -UnmanagedUpdate
     Start Time: ‎Thu ‎Nov ‎10 ‎2016 06:51:55
    
    Start: Signatures Update Service
    Update Started
    Search Started (MU/WU update) (Path: http://www.microsoft.com)...
    Search Completed 
    Update completed succesfully. no updates needed
    End: Signatures Update Service
    MpCmdRun: End Time: ‎Thu ‎Nov ‎10 ‎2016 06:51:58
    -------------------------------------------------------------------------------------
    
    
    -------------------------------------------------------------------------------------
    MpCmdRun: Command Line: "C:\Program Files\Microsoft Security Client\\MpCmdRun.exe" SignatureUpdate -ScheduleJob -ISU -RestrictPrivileges
     Start Time: ‎Thu ‎Nov ‎10 ‎2016 08:51:55
    
    Run as Network Service
    MpCmdRun: End Time: ‎Thu ‎Nov ‎10 ‎2016 08:51:55
    -------------------------------------------------------------------------------------
    
    
    -------------------------------------------------------------------------------------
    MpCmdRun: Command Line: "C:\Program Files\Microsoft Security Client\\MpCmdRun.exe" SignaturesUpdateService -ScheduleJob -UnmanagedUpdate
     Start Time: ‎Thu ‎Nov ‎10 ‎2016 08:51:55
    
    Start: Signatures Update Service
    Update Started
    Search Started (MU/WU update) (Path: http://www.microsoft.com)...
    Search Completed 
    Download Started...
    Time Info - ‎Thu ‎Nov ‎10 ‎2016 08:52:11 Download Progress-
     Update Index:0 of 1 - 0%
    Download Progress-
     Update Index:0 of 1 - 100%
    Download Progress-
     Update Index:0 of 1 - 100%
    Download Completed 
    Download Completed 
    Installation Started...
    Time Info - ‎Thu ‎Nov ‎10 ‎2016 08:52:41 Installation Progress-
     Percent Complete:100,
     Current Update Index:0 (of 1)
    Installation Progress-
     Percent Complete:100,
     Current Update Index:0 (of 1)
    Installation Completed 
    Update completed succesfully
    End: Signatures Update Service
    MpCmdRun: End Time: ‎Thu ‎Nov ‎10 ‎2016 08:52:41
    -------------------------------------------------------------------------------------
    
    
    -------------------------------------------------------------------------------------
    MpCmdRun: Command Line: "C:\Program Files\Microsoft Security Client\\MpCmdRun.exe" SignatureUpdate -ScheduleJob -ISU -RestrictPrivileges
     Start Time: ‎Thu ‎Nov ‎10 ‎2016 10:51:55
    
    Run as Network Service
    MpCmdRun: End Time: ‎Thu ‎Nov ‎10 ‎2016 10:51:55
    -------------------------------------------------------------------------------------
    
    
    -------------------------------------------------------------------------------------
    MpCmdRun: Command Line: "C:\Program Files\Microsoft Security Client\\MpCmdRun.exe" SignaturesUpdateService -ScheduleJob -UnmanagedUpdate
     Start Time: ‎Thu ‎Nov ‎10 ‎2016 10:51:55
    
    Start: Signatures Update Service
    Update Started
    Search Started (MU/WU update) (Path: http://www.microsoft.com)...
    Search Completed 
    Update completed succesfully. no updates needed
    End: Signatures Update Service
    MpCmdRun: End Time: ‎Thu ‎Nov ‎10 ‎2016 10:52:02
    -------------------------------------------------------------------------------------
    (b) MpSigStub.log

    Code:
    ----------------------------------------------------------------------------------
    Command:    MpSigStub.exe /program ANTIMALWARE /q
    Running as administrator: yes
    Start time: 11/9/2016 10:52 PM (version 1.1.13251.0)
    
    =================================== ProductSearch ==================================
    
                     Microsoft Security Essentials:
             Status: Active                        
            Product: 4.10.205.0                    
             Engine: 1.1.13202.0                   
         Signatures: 1.231.1595.0                  
         NIS Engine: 2.1.12706.0                   
     NIS Signatures: 116.65.0.0                    
    
    ================================ PackageDiscovery ================================
    
    Package files discovered:
    C:\Windows\Temp\DBC2B160BA060F34BB15029FC66C52FB-Sigs\1.231.1595.0_TO_1.231.1613.0_MPASDLTA.VDM._P (?.?.?.?)
    C:\Windows\Temp\DBC2B160BA060F34BB15029FC66C52FB-Sigs\1.231.1595.0_TO_1.231.1613.0_MPAVDLTA.VDM._P (?.?.?.?)
    
                   AM BDD:     
           Engine: Not included
      AS base VDM: Not included
      AV base VDM: Not included
     AS delta VDM: 1.231.1613.0
     AV delta VDM: 1.231.1613.0
    
    ================================ PatchApplication ================================
    
    Patched mpasdlta.vdm to 1.231.1613.0
    Patched mpavdlta.vdm to 1.231.1613.0
    
    ================================= MpUpdateEngine =================================
    
    Package files for the engine update:
    C:\Windows\Temp\DBC2B160BA060F34BB15029FC66C52FB-Sigs\1.231.1595.0_TO_1.231.1613.0_MPASDLTA.VDM._P (?.?.?.?)
    C:\Windows\Temp\DBC2B160BA060F34BB15029FC66C52FB-Sigs\1.231.1595.0_TO_1.231.1613.0_MPAVDLTA.VDM._P (?.?.?.?)
    C:\Windows\Temp\DBC2B160BA060F34BB15029FC66C52FB-Sigs\mpasdlta.vdm (1.231.1613.0)
    C:\Windows\Temp\DBC2B160BA060F34BB15029FC66C52FB-Sigs\mpavdlta.vdm (1.231.1613.0)
    
    Updated from C:\Windows\Temp\DBC2B160BA060F34BB15029FC66C52FB-Sigs (0x0)
    
    ================================= ValidateUpdate =================================
    
    MpSigStub successfully updated Microsoft Security Essentials using the AM BDD package.
    
                   Original:     Updated to: 
     AS delta VDM: 1.231.1595.0  1.231.1613.0
     AV delta VDM: 1.231.1595.0  1.231.1613.0
    
    Deleted C:\Windows\Temp\DBC2B160BA060F34BB15029FC66C52FB-Sigs\1.231.1595.0_TO_1.231.1613.0_MPASDLTA.VDM._P
    Deleted C:\Windows\Temp\DBC2B160BA060F34BB15029FC66C52FB-Sigs\1.231.1595.0_TO_1.231.1613.0_MPAVDLTA.VDM._P
    End time: 11/9/2016 10:52 PM
    ----------------------------------------------------------------------------------
    
    ----------------------------------------------------------------------------------
    Command:    MpSigStub.exe /program ANTIMALWARE /q
    Running as administrator: yes
    Start time: 11/10/2016 12:52 AM (version 1.1.13251.0)
    
    =================================== ProductSearch ==================================
    
                     Microsoft Security Essentials:
             Status: Active                        
            Product: 4.10.205.0                    
             Engine: 1.1.13202.0                   
         Signatures: 1.231.1613.0                  
         NIS Engine: 2.1.12706.0                   
     NIS Signatures: 116.65.0.0                    
    
    ================================ PackageDiscovery ================================
    
    Package files discovered:
    C:\Windows\Temp\DBC2B160BA060F34BB15029FC66C52FB-Sigs\1.231.1613.0_TO_1.231.1619.0_MPASDLTA.VDM._P (?.?.?.?)
    C:\Windows\Temp\DBC2B160BA060F34BB15029FC66C52FB-Sigs\1.231.1613.0_TO_1.231.1619.0_MPAVDLTA.VDM._P (?.?.?.?)
    
                   AM BDD:     
           Engine: Not included
      AS base VDM: Not included
      AV base VDM: Not included
     AS delta VDM: 1.231.1619.0
     AV delta VDM: 1.231.1619.0
    
    ================================ PatchApplication ================================
    
    Patched mpasdlta.vdm to 1.231.1619.0
    Patched mpavdlta.vdm to 1.231.1619.0
    
    ================================= MpUpdateEngine =================================
    
    Package files for the engine update:
    C:\Windows\Temp\DBC2B160BA060F34BB15029FC66C52FB-Sigs\1.231.1613.0_TO_1.231.1619.0_MPASDLTA.VDM._P (?.?.?.?)
    C:\Windows\Temp\DBC2B160BA060F34BB15029FC66C52FB-Sigs\1.231.1613.0_TO_1.231.1619.0_MPAVDLTA.VDM._P (?.?.?.?)
    C:\Windows\Temp\DBC2B160BA060F34BB15029FC66C52FB-Sigs\mpasdlta.vdm (1.231.1619.0)
    C:\Windows\Temp\DBC2B160BA060F34BB15029FC66C52FB-Sigs\mpavdlta.vdm (1.231.1619.0)
    
    Updated from C:\Windows\Temp\DBC2B160BA060F34BB15029FC66C52FB-Sigs (0x0)
    
    ================================= ValidateUpdate =================================
    
    MpSigStub successfully updated Microsoft Security Essentials using the AM BDD package.
    
                   Original:     Updated to: 
     AS delta VDM: 1.231.1613.0  1.231.1619.0
     AV delta VDM: 1.231.1613.0  1.231.1619.0
    
    Deleted C:\Windows\Temp\DBC2B160BA060F34BB15029FC66C52FB-Sigs\1.231.1613.0_TO_1.231.1619.0_MPASDLTA.VDM._P
    Deleted C:\Windows\Temp\DBC2B160BA060F34BB15029FC66C52FB-Sigs\1.231.1613.0_TO_1.231.1619.0_MPAVDLTA.VDM._P
    End time: 11/10/2016 12:52 AM
    ----------------------------------------------------------------------------------
    
    ----------------------------------------------------------------------------------
    Command:    MpSigStub.exe /program ANTIMALWARE /q
    Running as administrator: yes
    Start time: 11/10/2016 4:52 AM (version 1.1.13251.0)
    
    =================================== ProductSearch ==================================
    
                     Microsoft Security Essentials:
             Status: Active                        
            Product: 4.10.205.0                    
             Engine: 1.1.13202.0                   
         Signatures: 1.231.1619.0                  
         NIS Engine: 2.1.12706.0                   
     NIS Signatures: 116.65.0.0                    
    
    ================================ PackageDiscovery ================================
    
    Package files discovered:
    C:\Windows\Temp\DBC2B160BA060F34BB15029FC66C52FB-Sigs\1.231.1619.0_TO_1.231.1629.0_MPASDLTA.VDM._P (?.?.?.?)
    C:\Windows\Temp\DBC2B160BA060F34BB15029FC66C52FB-Sigs\1.231.1619.0_TO_1.231.1629.0_MPAVDLTA.VDM._P (?.?.?.?)
    
                   AM BDD:     
           Engine: Not included
      AS base VDM: Not included
      AV base VDM: Not included
     AS delta VDM: 1.231.1629.0
     AV delta VDM: 1.231.1629.0
    
    ================================ PatchApplication ================================
    
    Patched mpasdlta.vdm to 1.231.1629.0
    Patched mpavdlta.vdm to 1.231.1629.0
    
    ================================= MpUpdateEngine =================================
    
    Package files for the engine update:
    C:\Windows\Temp\DBC2B160BA060F34BB15029FC66C52FB-Sigs\1.231.1619.0_TO_1.231.1629.0_MPASDLTA.VDM._P (?.?.?.?)
    C:\Windows\Temp\DBC2B160BA060F34BB15029FC66C52FB-Sigs\1.231.1619.0_TO_1.231.1629.0_MPAVDLTA.VDM._P (?.?.?.?)
    C:\Windows\Temp\DBC2B160BA060F34BB15029FC66C52FB-Sigs\mpasdlta.vdm (1.231.1629.0)
    C:\Windows\Temp\DBC2B160BA060F34BB15029FC66C52FB-Sigs\mpavdlta.vdm (1.231.1629.0)
    
    Updated from C:\Windows\Temp\DBC2B160BA060F34BB15029FC66C52FB-Sigs (0x0)
    
    ================================= ValidateUpdate =================================
    
    MpSigStub successfully updated Microsoft Security Essentials using the AM BDD package.
    
                   Original:     Updated to: 
     AS delta VDM: 1.231.1619.0  1.231.1629.0
     AV delta VDM: 1.231.1619.0  1.231.1629.0
    
    Deleted C:\Windows\Temp\DBC2B160BA060F34BB15029FC66C52FB-Sigs\1.231.1619.0_TO_1.231.1629.0_MPASDLTA.VDM._P
    Deleted C:\Windows\Temp\DBC2B160BA060F34BB15029FC66C52FB-Sigs\1.231.1619.0_TO_1.231.1629.0_MPAVDLTA.VDM._P
    End time: 11/10/2016 4:52 AM
    ----------------------------------------------------------------------------------
    
    ----------------------------------------------------------------------------------
    Command:    MpSigStub.exe /program ANTIMALWARE /q
    Running as administrator: yes
    Start time: 11/10/2016 8:52 AM (version 1.1.13251.0)
    
    =================================== ProductSearch ==================================
    
                     Microsoft Security Essentials:
             Status: Active                        
            Product: 4.10.205.0                    
             Engine: 1.1.13202.0                   
         Signatures: 1.231.1629.0                  
         NIS Engine: 2.1.12706.0                   
     NIS Signatures: 116.65.0.0                    
    
    ================================ PackageDiscovery ================================
    
    Package files discovered:
    C:\Windows\Temp\DBC2B160BA060F34BB15029FC66C52FB-Sigs\1.231.1629.0_TO_1.231.1641.0_MPASDLTA.VDM._P (?.?.?.?)
    C:\Windows\Temp\DBC2B160BA060F34BB15029FC66C52FB-Sigs\1.231.1629.0_TO_1.231.1641.0_MPAVDLTA.VDM._P (?.?.?.?)
    
                   AM BDD:     
           Engine: Not included
      AS base VDM: Not included
      AV base VDM: Not included
     AS delta VDM: 1.231.1641.0
     AV delta VDM: 1.231.1641.0
    
    ================================ PatchApplication ================================
    
    Patched mpasdlta.vdm to 1.231.1641.0
    Patched mpavdlta.vdm to 1.231.1641.0
    
    ================================= MpUpdateEngine =================================
    
    Package files for the engine update:
    C:\Windows\Temp\DBC2B160BA060F34BB15029FC66C52FB-Sigs\1.231.1629.0_TO_1.231.1641.0_MPASDLTA.VDM._P (?.?.?.?)
    C:\Windows\Temp\DBC2B160BA060F34BB15029FC66C52FB-Sigs\1.231.1629.0_TO_1.231.1641.0_MPAVDLTA.VDM._P (?.?.?.?)
    C:\Windows\Temp\DBC2B160BA060F34BB15029FC66C52FB-Sigs\mpasdlta.vdm (1.231.1641.0)
    C:\Windows\Temp\DBC2B160BA060F34BB15029FC66C52FB-Sigs\mpavdlta.vdm (1.231.1641.0)
    
    Updated from C:\Windows\Temp\DBC2B160BA060F34BB15029FC66C52FB-Sigs (0x0)
    
    ================================= ValidateUpdate =================================
    
    MpSigStub successfully updated Microsoft Security Essentials using the AM BDD package.
    
                   Original:     Updated to: 
     AS delta VDM: 1.231.1629.0  1.231.1641.0
     AV delta VDM: 1.231.1629.0  1.231.1641.0
    
    Deleted C:\Windows\Temp\DBC2B160BA060F34BB15029FC66C52FB-Sigs\1.231.1629.0_TO_1.231.1641.0_MPASDLTA.VDM._P
    Deleted C:\Windows\Temp\DBC2B160BA060F34BB15029FC66C52FB-Sigs\1.231.1629.0_TO_1.231.1641.0_MPAVDLTA.VDM._P
    End time: 11/10/2016 8:52 AM
    ----------------------------------------------------------------------------------
    The real questions are:

    (a) where are they coming from and why?

    (b) why aren't they being deleted once used?

    I have run FULL scans using both MSE and MBAM, and both machines get a clean bill of health. I suspect it is the MSE and MBAM products themselves which are generating these CAB files.

    Any ideas?
      My Computer


  2. Posts : 4,776
    Microsoft Windows 7 Home Premium 64-bit 7601 Multiprocessor Free Service Pack 1
       #2

    Possible solution is to review and delete old logs - C:\Windows\Logs\CBS folder

    cab_xxxx files found in WINDOWS\TEMP folder - Microsoft Community
      My Computer


  3. Posts : 2,752
    Windows 7 Pro x64 (1), Win7 Pro X64 (2)
    Thread Starter
       #3

    Callender said:
    Possible solution is to review and delete old logs - C:\Windows\Logs\CBS folder

    cab_xxxx files found in WINDOWS\TEMP folder - Microsoft Community
    Excellent!

    I have now deleted the contents of C:\Windows\Logs\CBS and C:\Windows\Temp on both machines. I will let time go by and will check in again tomorrow, to see if this indeed was the explanation and if the symptom now disappears permanently.

    Many thanks for the tip. Fingers crossed it works.
      My Computer


  4. Posts : 2,752
    Windows 7 Pro x64 (1), Win7 Pro X64 (2)
    Thread Starter
       #4

    Well, pretty amazing. Sure enough, the issue has disappeared!! On both machines!

    No more auto-generated CAB files in C:\Windows\Temp, and essentially no files being created in C:\Windows\Logs\CBS as there were previously.

    Whatever was the initial cause for the \CBS folder contents on both machines, deleting everything in that folder seems to have been the overall solution.

    Looks like case closed. Thank you again for the tip.
      My Computer


 

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