> For the complete documentation index, see [llms.txt](https://docs.soraco.co/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.soraco.co/docs/troubleshooting/failed-to-validate-request-because-the-time-between-server-and-client-is-not-synchronized.md).

# Failed to validate request because the time between server and client is not synchronized

When calling a web service method, you may get the error:

*"Failed to validate request because the time between server and client is not synchronized. Difference in time is > xxx"*

QLM validates that the time on the client is within a certain threshold from the time on the server. This is to avoid hackers from intercepting activation requests and playing them back later on.

To resolve this issue, you have 2 choices:

1. Option 1: Ask the end user to make sure the time on his system is correct and always synchronized with a time server.
2. Option 2: Increase the threshold that QLM allows. This threshold value is configurable from Manage Keys / Sites / Server Properties / options / webMethodMaximumDelay. The default value is 600 seconds (10 minutes).