Skip to main content


Showing posts from October, 2016

MacOS Sierra Time Machine - Preparing backup... forever to Synology

I am using Synology NAS to backup my Mac using Time Machine. After upgrade to MacOS Sierra (10.12.1) Time Machine backup sort of backed up my Mac. By sort of I mean it was showing Preparing backup...  forever but if I entered Time Machine backup all backups even new ones were there.

To resolve the issue with "Preparing backup...":

I removed backup disk in Time Machine preferencesRemoved all Synology Diskstation passwords from KeyChain Access (not only Time Machine ones) Deselected Time Machine shared folder from Synology file services menuDisabled Mac file service (AFP) from Synology Control panelDismounted all Synology mounted drivesEnabled SMB 3.0 in Synology File services (Control panel)Enabled back Mac file service in SynologySelected Time Machine shared folder under Mac file services in SynologyOpened Time Machine settings and Selected Time Machine disk from the listSelected Encrypt backupEntered username and password for Time Machine backupEntered password for encrypte…

Your password couldn't be changed in OWA 2013

Your users might get an error while changing their password through Outlook WebApp (Exchange 2013) stating:
Your password couldn't be changed. Make sure the old password you typed is correct and that the new password meets the minimmum security requirements.

On the other hand password change through Windows in Site 2 is successful. Password Group Policy is OK and it is working in primary site.

Two sites | Two domain controllers, each in its own site

If Exchange servers are in other site than users trying to change their password, open port 464 in firewall for Exchange servers to let Exchange communicate with domain controller in other site.

Protocol and Port AD and AD DS Usage Type of traffic TCP and UDP 464 Replication, User and Computer Authentication, Trusts Kerberos change/set password

The Windows component Server-Gui-Mgmt-Infra isn't installed on this computer and needs to be installed before Exchange setup

You get this error "The Windows component Server-Gui-Mgmt-Infra isn't installed on this computer and needs to be installed before Exchange setup" when you try to install Exchange 2016 on Windows 2016 server. Exchange 2016 pre CU3 does not support Windows 2016, therefore you need to download Exchange 2016 CU3, which is in fact full copy of Exchange 2016 server in order to install it on Windows 2016 machine.