Cause. This issue occurs because the access check fails between the Client Access server and the Microsoft Office Store: ( https://o15.officeredir.microsoft.com/r/rlidMktplcWSConfig15 ). Resolution. If the server that's running Exchange Server has an internet connection, check the proxy server to see whether the following URL is enabled for access:

Describes an issue that causes OAuth authentication to fail in a proxy scenario between Exchange Server 2013 hybrid on-premises and Office 365. Provides a resolution.

A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond (system) This issue may occur when many connection requests are submitted at the same time.

INNER: = A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 192.168.56.190:56737. Then, you receive the following error message: DSL_2_Project Project Failed On Create. Symptoms.

Fixes an issue that triggers errors if database mirroring is configured by Transact-SQL in SQL Server 2016 and if no database activity occurs for more than 90 seconds.

Fixes an issue in which you cannot configure the time-out value for Database Mail in SQL Server 2005 or in SQL Server 2008.

Resolution. To resolve this issue, use one or more of the following methods. After you complete each method, send yourself a test email message to make sure that you can send and receive messages without receiving an error message. If you continue to receive errors, try the next method.

When you use Microsoft Outlook to connect to Office 365 Exchange servers, Outlook displays a "Trying to Connect" or "Disconnected" status for a time period of five minutes to an hour or more. Cause. This problem occurs because individual function calls in the remote procedure call (RPC) over the HTTP connection take a long time to return ...

Symptoms. Assume that you have a Master Data Services (MDS) database in Microsoft SQL Server 2016 Service Pack 1, Service Pack 2 or SQL Server 2017. When you try to connect to the MDS database by using the MDS Add-in for Microsoft Excel, the connection is unsuccessful.

Cause. This issue occurs because a of a time-out error when the source server determines the range of log files. The server takes more than 15 seconds, which is the hardcoded time-out value. Resolution. To resolve this issue, install the following update rollup: 2645995 Description of Update Rollup 1 for Exchange Server 2010 Service Pack 2.