Unable to Install Lightroom update

hi!

 

i downloaded latest update lightroom can't install it.  when try install see error. installer never asked me admin password!

 

but computer , have administrator rights.

i have no problems other applications , updates. example, adobe photoshop updates creative cloud.

 

this problme persist me long time , asking of kind because stuck old version of lighroom

 

 

thank help.

uninstall lr cc via cc app, uninstall or remove creative cloud apps

 

then use cc app reinstall lr.

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