Category: Repair Office Files

Fix “Could Not Complete the Operation, One Or More Parameter Values Are Not Valid”

Error Code: “Could Not Complete the Operation, One Or More Parameter Values Are Not Valid” Symptoms:   After a Windows update, MS Outlook displayed an error “Outlook is not the default email client”. Later, resetting the Outlook as the default client allowed the access to Outlook. Surprisingly, previous Outlook rules are no longer working. If