Cannot sign in to Skype for Business because your computer clock is not set correctly

Scenario

User cannot sign-in to Skype for Business via client and has error:

"Cannot sign in to Skype for Business because your computer clock is not set correctly. To check your computer clock settings, open Date and Time in the Control Panel."

Solution

Per KB2581291 Microsoft suggests to make sure that the computer's clock and time zone settings are set correctly. And it's correct article except the fact that the registry key "ClockSkew" is located under another registry path:

HKEY_CURRENT_USER\Software\Microsoft\MSOIdentityCRL

instead of documented:

HKEY_USERS\.DEFAULT\Software\Microsoft\MSOIdentityCRL

In my particular case users messed with time and had unchecked "Daylight Saving Time" setting.

The Time Zone, the "Daylight Saving Time" settings were corrected, time synchronization were completed, registry key "ClockSkew" was deleted and Skype for Business client could sign-in.

References

• KB2581291