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Super6VCA
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Expert

CAB files in Temp directory

I have a VM that is a manual pool, and for whatever reason the C:\windows\temp folder keeps getting filled up with CAB files and shutting down my VM after the drive gets full.  Looks like something to do with Tools but not certain.  The attached file shows some of the files and there are some that i cannot delete.  I tried to uninstall and reinstall tools with no luck.  Tried the management service researt with now luck.  Does anyone know what is causing this or how to get rid of it without rebuilding the VM?  Any help is appreciated.  thanks

Thank you, Perry
2 Replies
jmacdaddy
Enthusiast
Enthusiast

Can you show us a screenprint of the actual CAB files?

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Super6VCA
Expert
Expert

i did find an article about the issue.  It is related to windows CBS logs some how.  There is a way to get rid of them and so far it works.  here is teh article

[SOLVED] Component-Based Servicing (cbs.log) causes all drive space to be consumed

JW

jwalker107 started on August 26, 2015

Because I've seen this question asked in many places and not answered, I thought I'd post my issue and resolution here.  I regard this as a Bug, but I'm not invested enough to deal with the support incident process.

I've had repeated instances where a Windows 7 x64 client runs out of hard drive space, and found that C:\Windows\TEMP is being consumed with hundreds of files with names following the pattern "cab_XXXX_X", generally 100 MB each, and these files are constantly generated until the system runs out of space.  Upon removing the files & rebooting, the files start being generated again.

I've found that this is caused by large Component-Based Servicing logs.  These are stored at C:\Windows\Logs\CBS.  The current log file is named "cbs.log".  When "cbs.log" reaches a certain size, a cleanup process renames the log to "CbsPersist_YYYYMMDDHHMMSS.log" and then attempts to compress it into a .cab file.

However, when the cbs.log reaches a size of 2 GB before that cleanup process compresses it, the file is to large to be handled by the makecab.exe utility.  The log file is renamed to CbsPersist_date_time.log, but when the makecab process attempts to compress it the process fails (but only after consuming some 100 MB under \Windows\Temp).  After this, the cleanup process runs repeatedly (approx every 20 minutes in my experience). The process fails every time, and also consumes a new ~ 100 MB in \Windows\Temp before dying.  This is repeated until the system runs out of drive space.

This can be reproduced by trying to manually create the cab file -

Directory of C:\CBS-BAK

08/26/2015  02:28 PM    <DIR> .
08/26/2015  02:28 PM    <DIR> ..
08/22/2015  09:12 PM     2,491,665,966 CbsPersist_20150823021618.log

C:\CBS-BAK>makecab CbsPersist_20150823021618.log
Cabinet Maker - Lossless Data Compression Tool

86.19% - CbsPersist_20150823021618.log (1 of 1)
ERROR: (FCIAddFile)Data-size or file-count exceeded CAB format limits

C:\CBS-BAK>dir %TEMP%\cab*
Volume in drive C is OSDisk
Volume Serial Number is 44DE-0CDD

Directory of C:\Users\USERNAME\AppData\Local\Temp

08/26/2015  02:31 PM       102,786,654 cab_4556_2
08/26/2015  02:28 PM 0 cab_4556_3
08/26/2015  02:28 PM 0 cab_4556_4
08/26/2015  02:28 PM 0 cab_4556_5
08/26/2015  02:28 PM 0 cab_4556_6
08/26/2015  02:28 PM        12,978,919 cab_5860_2
08/26/2015  02:27 PM 0 cab_5860_3
08/26/2015  02:27 PM 0 cab_5860_4
08/26/2015  02:27 PM 0 cab_5860_5
08/26/2015  02:27 PM 0 cab_5860_6

To resolve this -

Stop the Windows Modules Installer (TrustedInstaller) service

Delete or move the large Cbspersist_XX.log file out of \Windows\Logs\CBS.

Start the Windows Modules Installer (TrustedInstaller) service

Thank you, Perry