Health Analyzer: The Visio Graphics Service has a minimum cache age setting that may cause a security issue

Problem

The following issue appears in the SharePoint 2010 Central Administration Review problems and solutions report:

Title	The Visio Graphics Service has a minimum cache age setting that may cause a security issue.
Severity	1 - Error
Category	Performance
Explanation	Setting minimum cache age to 0 minutes may leave the Visio Graphics Service open to a denial of service (DoS) attack. A value of 0 for this setting may lead to large processor and network load of the Visio Graphics Service and SharePoint, decreasing the expected performance of both. However, increasing this value means that users will not see their Web Drawings refreshing as frequently. The minimum cache age rule for value 0 failed. Visio Services
Remedy	The resolve this issue, the Visio Graphics Service administrator must assign a value greater than 0 minutes to this setting. For more information about this rule, see "http://go.microsoft.com/fwlink/?LinkID=142657".
Failing Servers
Failing Services	VisioGraphicsService
Rule Settings	View

Solution

You may see this issue appear if, after testing Visio services, you forget to change the cache age settings back to their recommended value ranges.  To solve:

1. Go to farm Central Administration.
2. Navigate to: CA > Application Management > Manage Service Applications > Visio Graphics Services Application > Global Settings.
3. Set Minimum Cache Age to a value > 5 (minutes).
   
   

References

• The Visio Graphics Service has a minimum cache age setting that may cause a security issue (SharePoint Server 2010)
• Testing Rendering and Data Refresh for Visio Services