Monthly Archives: March 2013

Windows knowhow

Windows Update and Windows Search do not work

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Hi,

a good friend of mine came to me last week because some services of Windows Vista on his notebook did not run as expect. In detail:

  • Windows Search service starts but terminates
    • EventID 7034: The Windows Search service terminated unexpectedly.  It has done this 4 time(s).

      Windows search terminates after start
      Windows search terminates after start
    • EventID 7024: The Windows Search service terminated with service-specific error 2147749155 (0x80040D23)
    • EventID 1006: The Windows Search Service has failed to create the new search index. Internal error <4, 0x8004117f
    • EventID 9000: The Windows Search Service cannot open the Jet property store.
  • Windows Update service starts, but do not work, some errors are logged in C:\Windows\WindowsUpdate.log
    • 45c    DtaStor    FATAL: Failed to initialize datastore, error = 0xC8000247
    • 45c    AU    FATAL: Failed to get session from datastore, error = 0xC8000247
    • 45c    AU    FATAL: Failed to Unserialize from data store, error = 0xC8000247
  • No Windows Update File could installed by double clicking a msu File.
  • Cryptocraphic service do not run as expected:
    • Signature for Windows builtin programs cannot be verified, for example mmc.exe. Error Message:

      “Do you want the following program to allow changes to this computer?“

      UAC Message: builtin executables could not verified.
      UAC Message: builtin executables could not verified.
    • Cause: The folder c:\windows\system32\catroot2 is empty or/and some errors are logged in file C:\Windows\System32\catroot2\dberr.txt:
      CatalogDB: 21:39:37 28.02.2013: JetInit Corruption
      CatalogDB: 21:39:37 28.02.2013: catdbsvc.cpp at line #747 encountered JET error -583
      CatalogDB: 21:39:37 28.02.2013: catdbsvc.cpp at line #961 encountered JET error -583
      CatalogDB: 21:39:37 28.02.2013: catdbsvc.cpp at line #6636 encountered JET error -583
    • EventID 257: The following information was included with the event: -583 the message resource is present but the message is not found in the string/message table

It seems that all services which uses the Window Jet Database engine are affected.

Solution

Continue reading Windows Update and Windows Search do not work →

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Windows knowhow

Windows: Disable or enable assigning of a drive letter when plugin a removeable device

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Hi,

the default setting in Windows Vista, 7 or 8 is to assign a drive letter when you plugin a removable device. But sometimes you want to prevent Windows from doing that, for example security reasons.

You can control this behaviour with the mountvol command.  The following command line disable the automatical assignment.


mountvol /N

to enable the auto assignment again execute

mountvol /E

Michael

Apache, KnowHow

Apache: Enable Server side includes SSI for a virtual directory

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Hi,

short post as reminder how to enable Server Side Includes on a virtual directory.

mod_include must be enabled. MimeType for text/html must associated with .shtml file extension. Sample config for SSI looks like these:


<Directory "D:/user/www/virtualdirectory/">
    Options Indexes FollowSymLinks MultiViews ExecCGI Includes
    AllowOverride All
    Order allow ,deny
    Allow from all
    Require all granted
    AddType text/html .shtml
    AddOutputFilter INCLUDES .shtml
</Directory>

See you Michael

Apache, KnowHow

Apache: Alias directive for virtual directory returns HTTP Error 403

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Hi,

I have added a virtual directory to an apache web server and the virtual directory is located outside the document root. I configured the httpd.conf how it is decripted in the apache doc

When I access the virtual directory an error “Access forbidden! Error 403” occured. The config seems to ok:

Alias /virtualdirectory/ "D:/user/www/virtual/"
<Directory "D:/user/www/virtual/">
   Options Indexes FollowSymLinks MultiViews ExecCGI
   AllowOverride All
   Order allow,deny
   Allow from all
</Directory>

Solution:

The default apache configration is very restrictive. It do not allow to access directories without authentication. This is defined in the Directory section of httpd.conf:


<Directory>
   AllowOverride none
   Require all denied
</Directory>

Add a “require all granted” directive to your virtual directory section will grant the access.

Alias /virtualdirectory/ "D:/user/www/virtual/"
<Directory "D:/user/www/virtual/">
   Options Indexes FollowSymLinks MultiViews ExecCGI
   AllowOverride All
   Order allow,deny
   Allow from all
   Require all granted
</Directory>
Electronic, Links

Electronic: Link to MC34063A calculator

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Hello,

I found these useful link to dimension a MC34063A DC2DC converter circuit:

Michael