Outlook on Windows XP clients are not able to login to Exchange 2013

Hello Guys,

It is been a while since last time i wrote in this blog. recently I faced a problem with an exchange 2013 server and windows XP outlook clients. When doing the Autodiscover and configure on a Windows 7/8 workstation, everything worked fine. However the windows XP machines would fail to authenticate and kept prompting for a username and password.


The solution was Common Name of internal certificate installed on Exchange 2013 should match Outlook Anywhere configuration (not SAN)

windows 7 can match outlook anywhere name with SAN, however Windows XP should match CN with outlook anywhere

Good Luck!
Ashraf Gouda

OWA not showing picture after applying rollup 10 for Exchange 2007 SP3

If you install Rollup 10 for Exhcange 2007 SP3 and tried to log in to OWA, sometimes you face issue that all icons are not showing like, sign off, inbox, etc..

this issue happens because rollup 10 doesn't create web.config on the new folder for OWA. to resolve this issue copy web.config from the old folder in OWA "8.3.1" to "8.239.1"


it should works..

Lync 2013 Forest Preparation Error: Object reference not set to an instance of an object

If you’re installing Lync 2013 and you got following error on Forest Preparation steps.

Error: Object reference not set to an instance of an object

▼ Details

└ Type: NullReferenceException

└ ▼ Stack Trace

└ at

Microsoft.Rtc.Management.Deployment.LcForest.SetupGroupKey(SharedSecretKey

groupKey, String ownerGroup, IEnumerable`1 readerGroups, String preferredDC)

at Microsoft.Rtc.Management.Deployment.LcForest.PrepareForest()
————————

To Solve Problem: Open Lync Management Shell and Type following;

Enable-CsAdForest -GroupDomain domain.local -GroupDomainController dc.domain.local -GlobalCatalog dc.domain.local

(dc.domain.local = your company’s top domain controller)

Live migration problem: General access denied error (0x80070005) windows server 2012

If you try to live migrate virtual machine between two hyper-v host and you faced the following error:

"Virtual machine migration operation for 'VMname' failed at migration source 'hyper-v'. (Virtual machine ID number)

The Virtual Machine Management Service failed to establish a connection for a Virtual Machine migration with host 'hyper-v': General access denied error (0x80070005).

The Virtual Machine Management Service failed to establish a connection for a Virtual Machine migration because the destination host rejected the request: General access denied error (0x80070005)"



Resolution:
Repair failover cluster in windows server 2012.

1- go to the name of cluster.
2- bring the source offline.
3- right click on the name and choose repair.
4- right click on  the name and choose properties, and check that the DNS status: OK


hope it can help someone 

SQL 2008 R2 SP2 clustered over windows server 2012

If you happen to install SQL 2008 R2 SP2 clustered over windows server 2012, the “ cluster service verification “ rule on the initial setup wizard will fail and shows the following error:

Resolution:

-       

        Run the following Windows PowerShell cmdlet on each node to enable the Failover Cluster Automation Server feature:

add-windowsfeature RSAT-Clustering-AutomationServer 

Reference:

http://support.microsoft.com/kb/2681562

Virtual Disk Manager, The requested resource is in use, windows server 2012 cluster

recently i faced an issue with attaching EMC symmetrix and Windows server 2012 failover cluster manager. suddenly all disks shows "RAW" file system and when you try to format the disk the following error appears: "the requested resource is in use".

to resolve the issue use the following command:

This command clears the persistent reservation on Disk 1

Clear-ClusterDiskReservation -Disk 1

run the command to all disks that shows RAW .. enjoy :)

Error 0x80070569 in Hyper-V 2012

when you create a new virtual machine or use live migration over Hyper-V windows server 2012 sometimes you got the following error:

Failed to create Planned Virtual Machine at migration destination: Logon failure: the user has not been granted the requested logon type at this computer. (0x80070569)

to work around this issue:

1- open cmd as administrator
2- type

gpupdate /force

then create again the virtual machine :) 

http://support.microsoft.com/kb/2779204