Disabling auto-creation of printers in Citrix

I have a few users who are experiencing Citrix printing/performance issues and I suspect its related to the number of Auto Created Client Printers and I'd like to disable them.  I found this article https://support.citrix.com/article/CTX117805 yet here is my issue:

I get an error writing to the registry while logged in to the Citrix server as the user and when I'm logged in to the server w/elevated account permissions, I also have issues.

 The Citrix documentation says:  "If the DefaultPrnFlags DWORD already exists on the server, add the specified hexadecimal value to the current value."

How do I do that?  It already exists and has a REG_DWORD value of 0x00004000.  When I right click>Modify only 4000 is in the Value Data text box.

Ideas?  Thanks in advance
H. G.Asked:
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H. G.Author Commented:
So I was able to modify registry on the Citrix server and I deleted the all Auto Created Client Printers but they keep coming back.
Dirk KotteSECommented:
use citrix policies to disable client printer auto creation.
DefaultPrnFlags  are usefull for special problems only.

I have good results with "create the default client printer only" and usage of citrix universal printer only.

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H. G.Author Commented:
Can the gpmc be used?  Whenever I try to launch the DS Console from the Citrix menu I get prompted to "configure" it as if I'm starting from scratch.
Dirk KotteSECommented:
you can use citrix policies from GPO too.
But you should try to correct your Citrix installation.
Citrix studio connects to a database, if there are problems, your environment is corrupted.
H. G.Author Commented:
Thanks.  Disabled auto creation in Citrix policies.
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