SBS 2011, store.exe using up all memory

We have an SBS 2011 installation. It has 16GBs of memory and it was constantly maxing this out.

We applied all windows updates and also installed 32GBs of memory.

Now we're up to using 32GBs of memory. Looking at Task Manager shows that store.exe is using 19GBs of memory.

Is this normal? I only have about 8 users using Exchange.

Is there a fix for it?

Thanks.
RFVDBAsked:
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Lee W, MVPTechnology and Business Process AdvisorCommented:
This is 100% normal.  Exchange will use all available memory and it should release it if the OS needs it for something else.  There ARE ways to limit the RAM, but again, THIS IS NORMAL.

Extra reading:
http://blogs.technet.com/b/maliks/archive/2012/04/25/exchange-2010-store-exe-service-takes-high-memory-utilization.aspx
http://blog.switchsystems.co.uk/2014/01/reducing-memory-usage-on-sbs-servers/
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