In Microsoft Outlook, you may receive an error while drafting a new email message and adding an email recipient to the message.   The operation failed. The messaging interfaces have returned an unknown error. If the problem persists, restart Outlook. Cannot resolve recipient.   This error message happens when your Outlook profile is corrupt. Rebuild your...

You receive a Cannot Start Application error message while attempting a program installation.   Application installation did not succeed. Cannot locate application files on the server. Contact the application vendor or your administrator for assistance.   Per Microsoft: One or more files in the deployment cannot be downloaded because you do not have permission to access...

If you recently typed a conversation in Microsoft Lync, you may receive a message in the Lync conversation window that the message may not have been sent to the Lync recipient.   This message may not have been to “” because the server timed out.    The error may occur if your Lync client’s cache needs...

If you attempt to use Citrix Receiver on your Android device, you may receive an error message after you attempt to login to Receiver.   Cannot validate SSL certificate Cannot verify this server’s certificate.   This error most commonly happens when your Citrix administrator has not installed the intermediate certificate to the Citrix Gateway or F5...

If you attempt to generate a Crystal Report, you may receive an unhandled exception error per below that prevents your reports from generating.   Unhandled exception has occurred in your application. If you click Continue, the application will ignore this error and attempt to continue. If you click Quit, the application will close immediately. Invalid index....