Category Archives: Configuration

Fix ….. install/uninstall error 1402 ‘Setup cannot open the registry key: UNKNOWN\Components\…’

Fixing a 1402 error while uninstalling or installing a product:

 

Error 1402. Setup cannot open the registry key: UNKNOWN\Components\<very long CLASS ID ending in>0F01FEC. Verify that you have sufficient permissions to access the registry or contact Microsoft Product Support Services (PSS) for assistance. For information about how to contact PSS, see C:\Users\XXX\AppData\Local\Temp\Setup00000e60\PSS10R.Chm.

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How to resolve error referring to the text “ap_cache_cacheable_hdrs_out” when starting Apache HTTP Server

I came across a need to enable the following links for the Apache HTTP Server, in order to enable response caching. Go to /etc/apache2 folder and give the following commands.

 

ln -s ../mods-available/file_cache.load file_cache.load

ln -s ../mods-available/mem_cache.conf mem_cache.conf

ln -s ../mods-available/mem_cache.load mem_cache.load

 

Once the above links were created, I tried to restart the server and it threw the following error

 

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