Cu10 prerequisite analysis failed

Hi,

I'm trying to apply CU10 to my Exchange 2013 SP1 but i'm getting these errors:

Error:
The Mailbox server role isn't installed on this computer.
For more information, visit: http://technet.microsoft.com/library(EXCHG.150)/ms.exch.setupreadiness.UnifiedMessagingRoleNotInstalled.aspx

Error:
The Mailbox server role isn't installed on this computer.
For more information, visit: http://technet.microsoft.com/library(EXCHG.150)/ms.exch.setupreadiness.BridgeheadRoleNotInstalled.aspx

I have tried this also for CU9 and even for the latest CU11.

i already prepared Schema and AD and using admin user with all access required.

The errors in my setup logs file are:

[12/18/2015 10:22:41.0297] [1] Failed [Rule:UnifiedMessagingRoleNotInstalled] [Message:The Mailbox server role isn't installed on this computer.]
[12/18/2015 10:22:41.0297] [1] Failed [Rule:BridgeheadRoleNotInstalled] [Message:The Mailbox server role isn't installed on this computer.]
[12/18/2015 10:22:41.0312] [1] [REQUIRED] The Mailbox server role isn't installed on this computer.
[12/18/2015 10:22:41.0312] [1] Help URL: http://technet.microsoft.com/library(EXCHG.150)/ms.exch.setupreadiness.UnifiedMessagingRoleNotInstalled.aspx
[12/18/2015 10:22:41.0312] [1] [REQUIRED] The Mailbox server role isn't installed on this computer.
[12/18/2015 10:22:41.0312] [1] Help URL: http://technet.microsoft.com/library(EXCHG.150)/ms.exch.setupreadiness.BridgeheadRoleNotInstalled.aspx
[12/18/2015 10:22:41.0375] [1] Ending processing test-SetupPrerequisites
[12/18/2015 10:22:41.0375] [0] Exchange Server installation failed during prereq check. Trying to restore the server state back to active.
[12/18/2015 10:22:41.0375] [0] RestoreServer Script Path: C:\Windows\Temp\ExchangeSetup\RestoreServerOnPrereqFailure.ps1

could you please help me on this.

Thanks

Alaa

alaaabdou