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THERE SHOULD BE A LINK HERE TO DESCRIPTION OF GLOBAL.PROPERTIES FILE
Known issue
As a user without administration rights Firebird sometimes will fail due to a missing security right. In this case you will see messages like "Error creating database connection". To solve this problem follow the next steps:
* start Control Panel -> Administrative tools -> Local security settings
* Select Local policies ->user rights assigment in the filter
* select from the list on the right side "Create global objects"
* add the group "Everyone" to this security right.
Now it will work.