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Typing in Windows virtual machine results in an error sound on Mountain Lion

APPLIES TO:
  • Parallels Desktop 7 for Mac

Symptoms

Typing in Windows virtual machine after upgrade to Mountain Lion results in an error "beeping" sound in Windows.

Cause

This issue has been reported to Parallels Product Maintenance team and is being investigated. 

Workaround

There is a temporary workaround which helps to isolate mouse flickering, which also helps with this issue.

Please go to Virtual Machine menu ► Configure ► Options ► Coherence ► and disable Crystal mode as shown below: 



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