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Rick Blythe

About Rick Blythe

Social Media Program Manager for VMware, Rick Blythe manages the Twitter handle @vmwarekb and curates the Support Insider Blog.

Access Denied – You don’t have permission to access …

We’ve noticed a number of you who are encountering an error when attempting to access the VMware Knowledgebase, whether it be the main landing page, or a specific article in the KB. You see something like:

Access Denied – You don’t have permission to access “http://kb.vmware.com/” on this server.

We are aware of the problem and are investigating the issue on our servers, but in the meantime we want everyone to know the work-around. Go into the menu of the browser you are using and clear both the cookies and the cache.  Then reload the KB URL – it should then work.

We apologize for this inconvenience.

VMware Thinclient FAQ

VMware ThinclientWhat are zero clients and thin clients you ask? No, they’re not skinny customers, they are hardware devices which rely on the server to do most of the work while they serve merely to deliver input and output back and forth for the user.

Our research tells us many of you are wondering about zero clients and thin clients; their differences and function. Read on as we explain your client options for VMware Horizon View.

What’s the difference between a thin client, thick client, and a zero client?

Zero clients have no local storage, operating system or CPU, just a chip that decodes PCoIP at the hardware level and renders the pixels onto the user’s display. Benefits of a zero client include highly efficient energy use, and next to no device management – just configure and deploy.

Thin clients are similar to zero clients on the outside, but contain a CPU, memory, storage and an operating system to make them run.

A thick client would be a regular laptop or desktop, running a standard OS and the software client. These clients of course are the most expensive to run and maintain.

Why would I want a thin or zero client?

  • Extremely efficient energy use.
  • Huge cost savings vs purchasing thick clients.
  • Ease of deployment and management.
  • No data is stored on device so perfect for secure environments.

What are the advantages and disadvantages of these types of clients?

Zero Client

+ Less overhead and maintenance.
- Can be protocol specific, so if you change infrastructures you may need new devices.
- USB devices may become more complicated to use.

Thin Client

+ VPN connectivity options.
+ More supportability for USB devices.
- More software updates than a zero client, but less than a thick client.

What other connection options are out there?

Windows software client

VMware Horizon Client for Windows makes it easy to access your Windows virtual desktop with the best possible user experience on the Local Area Network (LAN) or across a Wide Area Network (WAN).

  • Support for Windows 8 and 8.1 (with Updates) and Windows 7 systems – With Horizon Client 3.3, support for Windows XP and Windows Vista has been discontinued. See What’s New.
  • Unmatched performance – The adaptive capabilities of the PCoIP display protocol are optimized to deliver the best user experience, even over low-bandwidth and high-latency connections. Your desktop is fast and responsive regardless of where you are.
  • Simple connectivity – Horizon Client for Windows is tightly integrated with VMware Horizon 6 for simple setup and connectivity.
  • Secure from any location – At your desk or away from the office, your data is delivered securely to you wherever you are. SSL/TLS encryption is always used to protect user credentials, and enhanced certificate checking is performed on the client. Horizon Client for Windows also supports optional RADIUS and RSA SecurID authentication.

Mac software client

Horizon Client for Mac OS X makes it easy to access your Windows-based remote desktop or application from your Mac with the best possible user experience on the Local Area Network (LAN) or across a Wide Area Network (WAN).

  • Support for Mac OS X Snow Leopard (10.6.8), Mac OS X Lion (10.7), Mac OS X Mountain Lion (10.8), Mac OS X Mavericks (10.9), and Mac OS X Yosemite (10.10) – Use a 64-bit Intel-based Mac to work on your Windows-based remote desktop or application.
  • Unmatched performance – The adaptive capabilities of the PCoIP display protocol are optimized to deliver the best user experience, even over low-bandwidth and high-latency connections. Your remote desktop or application is fast and responsive regardless of where you are.
  • Simple connectivity – Horizon Client for Mac OS X is tightly integrated with View for simple setup and connectivity. Quickly reconnect to your remote desktop or application by selecting from up to eight View server shortcuts in Horizon Client.
  • Secure from any location – At your desk or away from the office, your data is delivered securely to you wherever you are. Enhanced certificate checking is performed on the client. Horizon Client for Mac OS X also supports optional RADIUS and RSA SecurID authentication. (RADIUS support was added with VMware View 5.1 and Horizon Client for Mac OS X 1.5 or later.)

Linux software client

VMware Horizon Client for Linux makes it easy to access your Windows virtual desktop from a supported Linux system with the best possible user experience on the Local Area Network (LAN) or across a Wide Area Network (WAN).

  • Support for Ubuntu 12.04 or 14.04, Red Hat Enterprise Linux (RHEL) 6.5, SUSE Linux Enterprise Desktop (SLED) 11 SP3, and CentOS 6.5 – The Horizon Client 3.2 installer provides support for these operating systems.
  • Unmatched performance – The adaptive capabilities of the PCoIP display protocol are optimized to deliver the best user experience, even over low-bandwidth and high-latency connections. Your desktop is fast and responsive regardless of where you are.
  • Simple connectivity – Horizon Client for Linux is tightly integrated with VMware Horizon for simple setup and connectivity.
  • Secure from any location – At your desk or away from the office, your data is delivered securely to you wherever you are. Enhanced certificate checking is performed on the client. Horizon Client for Linux also supports optional RADIUS and RSA SecurID authentication.

HTML Access

HTML Access makes it easy to access your Windows virtual desktop from an HTML 5-based browser; no need to install any software.

  • Access View desktops from device platforms where no native client is available, or from any computer on which you do not want to install software. You can also select HTML Access from a VMware Workspace Catalog.
  • HTML Access is tightly integrated with VMware Horizon 6 for simple setup and connectivity. Open a browser, enter a server URL, and log in to see a list of available View desktops.
  • At your desk or away from the office, your data is always secure. Enhanced certificate checking is performed on the client. HTML Access also supports optional RADIUS and RSA SecurID authentication.

vSphere 6.0 is here! – KBs you need to know about

vSphere 6.0 has been released for all to download. We’re sure vSphere users are all eager to install a copy and start kicking the tires, and we’re just as eager to see that you get started on the right foot. With this in mind, we have created the following list of Knowledge Base articles that are brand new, or have been updated for vSphere 6. You’ll notice lots of how-to KBs here.

ESXi\Hypervisor

Devices deprecated and unsupported in ESXi 6.0 (2087970)

Update sequence for vSphere 6.0 and its compatible VMware products (2109760)

ESXi/ESX hosts and compatible virtual machine hardware versions list (2007240)

Troubleshooting native drivers in ESXi 5.5 or later (2044993)

Methods for upgrading to ESXi 6.0 (2109711)

Methods of installing ESXi 6.0 (2109708)

Installing or upgrading to ESXi 6.0 best practices (2109712)

Installing async drivers on VMware ESXi 5.x and ESXi 6.0.x (2005205)

vSphere\vCenter Server

Important Information before upgrading to vSphere 6.0 (2110293)

List of recommended topologies for vSphere 6.0.x (2108548)

Methods for upgrading to ESXi 6.0 (2109711)

Methods of installing ESXi 6.0 (2109708)

Installing or upgrading to ESXi 6.0 best practices (2109712)

Installing async drivers on VMware ESXi 5.x and ESXi 6.0.x (2005205)

Devices deprecated and unsupported in ESXi 6.0 (2087970)

Minimum requirements for the VMware vCenter Server 6.x Appliance (2106572)

Stopping, starting, or restarting VMware vCenter Server 6.0 services (2109881)

vCenter Server

Upgrading to vCenter Server 5.5 best practices (2109772)

Installing vCenter Server 6.0 Best Practices (2107948)

Methods for installing vCenter Server 5.5 (2053142)

Upgrading to vCenter Server 6.0 without migrating SQL database to vPostgres (2109321)

Upgrading to VMware vCenter Server 6.0 with an embedded Platform Services Controller from vCenter Server 5.5 installed using the simple install method (2109559)

Upgrading VMware vCenter Single Sign-on 5.5 to a VMware vCenter Server 6.0 Platform Services Controller 6.0 (2109560)

Upgrading VMware vCenter Server 5.5 to vCenter Server 6.0 with an external Platform Services Controller (2109562)

vSphere with Operations Management Support Center

VMware vSphere and vSphere with Operations Management 6.x Licensing and Compatibility FAQ (2107528)

End of Availability and End of Support Life for VMware vCloud Director 5.1 Standalone (2057589)

Unable to connect to vRealize Operations appliance (2000208)

Active Directory account locks out due to repeated failed login attempts from vCenter Server (2001703)

Collecting diagnostic information for VMware vRealize Operations Enterprise 1.0 and VMware vRealize Operations Standalone 5.x (2006599)

VSAN

Collecting diagnostic information for VMware products (1008524)

Configuring Virtual SAN VMkernel networking (2058368)

Enabling or disabling a Virtual SAN cluster (2058322)

vSphere 6. Virtual SAN requirements (2106708)

Adding a host back to a Virtual SAN cluster after an ESXi host rebuild (2059091)

Requirements and considerations for the deployment of VMware Virtual SAN (VSAN) (2068911)

Migration from vSphere Storage Appliance (VSA) to VMware Virtual SAN (VSAN) (2068923)

SRM

Collecting diagnostic information for Site Recovery Manager (1009253)

Requirements when using trusted certificates with VMware Site Recovery Manager 1.0.x/4.0.x/4.1.x/5.x (1008426)

Operational Limits for Site Recovery Manager 6.0 (2105500)

How Site Recovery Manager Handles Storage DRS Tagging (2108196)

Setting up VMware vCenter Site Recovery Manager with Partner Storage Arrays (1014610)

Network Ports for Site Recovery Manager 6.0 (2103394)

VMware vRealize

Uninstalling a plug-in from VMware vRealize Orchestrator (formerly known as VMware vCenter Orchestrator) (2064575)

Working with vRealize Orchestrator over SSL connection (2007032)

Deploying and using the SSL Certificate Automation Tool 5.5 (2057340)

VMware vRealize Orchestrator times out with the error: Timeout, unable to get property name’ (2007423)

VMware vRealize Orchestrator 5.1 login to vCenter Server fails with the error: Unexpected status code: 400 (2042461)

VMware Virtual Appliances and customizations to operating system and included packages (2090839)

ALERT: Important Information Before Upgrading to vSphere 6

VMware Support AlertBefore upgrading your environment to vSphere 6.0, VMware would like everyone to read the following KB article for important information regarding:

  • Compatibility Considerations
  • Database Considerations
  • Backup and Restore Considerations

Please proceed to read this article: Important Information Before Upgrading to vSphere 6.0 (2110293)

Any updates to this information will be made in the KB article itself.

50 articles that fix EVERYTHING in Horizon View!

Ok, our title may exhibit a teenie-tiny hint of hyperbole, but seriously the following list of articles covers the majority of issues that you can solve yourself. We’ve posted these lists before but limited the number to twenty, but why do that? Your problem might be number twenty one.

  1. Manually deleting linked clones or stale virtual desktop entries from the View Composer database in VMware View Manager and Horizon View (2015112)
  2. Correlating VMware products build numbers to update levels (1014508)
  3. Generating and importing a signed SSL certificate into VMware Horizon View 5.1/5.2/5.3/6.0 using Microsoft Certreq (2032400)
  4. Pool settings are not saved, new pools cannot be created, and vCenter Server tasks are not processed in a Horizon View environment (2082413)
  5. VMware Products and CVE-2014-3566 (POODLE) (2092133)
  6. VMware Horizon View Best Practices (1020305)
  7. Network connectivity requirements for VMware View Manager 4.5 and later (1027217)
  8. Manually deleting replica virtual machines in VMware Horizon View 5.x (1008704)
  9. Finding and removing unused replica virtual machines in the VMware Horizon View (2009844)
  10. Restart order of the View environment to clear ADLDS (ADAM) synchronization in View 4.5, 4.6, 5.0, and 5.1 (2068381)
  11. Collecting diagnostic information for VMware Horizon View (1017939)
  12. View Connection Server reports the error: [ws_TomcatService] STDOUT: java.lang.OutOfMemoryError: Java heap space (2009877)
  13. Legacy applications fail to start with the VMware View 6.0 or 6.0.1 agent installed (2091845)
  14. Provisioning VMware Horizon View desktops fails with error: View Composer Agent initialization error (16): Failed to activate software license. (1026556)
  15. Cannot detach a Persistent Disk in View Manager 4.5 and later (2007076)
  16. Provisioning View desktops fails due to customization timeout errors (2007319)
  17. The View virtual machine is not accessible and the View Administration console shows the virtual machine status as “Already Used” (1000590)
  18. Forcing replication between ADAM databases (1021805)
  19. Administration dashboard in VMware Horizon View 5.1/5.2/5.3 reports the error: Server’s certificate cannot be checked (2000063)
  20. Troubleshooting SSL certificate issues in VMware Horizon View 5.1 and later (2082408)
  21. Removing a standard (replica) connection server or a security server from a cluster of connection/security servers (1010153)
  22. Troubleshooting Persona Management (2008457)
  23. View Persona Management features do not function when Windows Client-Side Caching is in effect. (2016416)
  24. Resolving licensing errors when deploying virtual Office to a system with Office installed natively. (2107369)
  25. Manually deleting linked clones or stale virtual desktop entries from VMware View Manager (1008658)
  26. Troubleshooting a black screen when logging into a Horizon View virtual desktop using PCoIP (1028332)
  27. The PCoIP server log reports the error: Error attaching to SVGADevTap, error 4000: EscapeFailed (1029706)
  28. Connecting to the View ADAM Database (2012377)
  29. Disabling SSLv3 connections over HTTPS to View Security Server and View Connection Server (2094442)
  30. The Event database performance in VMware View 6.0.x is extremely slow (2094580)
  31. Intermittent provisioning issues and generic errors when Composer and vCenter Server are co-installed (2105261)
  32. Performing an end-to-end backup and restore for VMware View Manager (1008046)
  33. Installing VMware View Agent or View Composer fails with the error: The system must be rebooted before installation can continue (1029288)
  34. View Connection Server fails to replicate (2014488)
  35. Provisioning View desktops fail with the error: View Composer Fault: VC operation exceeded the task timeout limit set by View Composer (2030047)
  36. Calculating datastore selection for linked-clone desktops in Horizon View 5.2 or later releases (2047492)
  37. VMware Horizon View Admin dashboard for vCenter Server 5.1 displays the message: VC service is not working properly (2050369)
  38. Generating a Horizon View SSL certificate request using the Microsoft Management Console (MMC) Certificates snap-in (2068666)
  39. Reconnecting to the VDI desktop with PCoIP displays a black screen (2073945)
  40. PCI Scan indicates that TCP Port 4172 PCoIP Secure Gateway is vulnerable to POODLE (CVE-2014-3566) (2099458)
  41. Troubleshooting USB redirection problems in VMware View Manager (1026991)
  42. Location of VMware View log files (1027744)
  43. Migrating linked clone pools to a different or new datastore (1028754)
  44. Error during provisioning: Unable to find folder (1038077)
  45. Unable to connect to a VMware View Manager desktop via the Security Server from outside the firewall (1039021)
  46. VMware View Agent fails to uninstall (2000017)
  47. View Manager Admin console displays the error: Error during provisioning: Unexpected VC fault from View Composer(Unknown)(2014321)
  48. Consolidating disks associated with a backup snapshot fails with the error: The file is already in use (2040846)
  49. Troubleshooting VMware Horizon View HTML Access (2046427)
  50. USB redirection may not work on cloned images after upgrading master image from VMware Horizon View 5.1 to 5.2 and 5.3 (2051801)

Top 20 Articles for February 2015

Top 20 KBs Here is our Top 20 KB list for February 2015. This list is ranked by the number of times a VMware Support Request was resolved by following the steps in a published Knowledge Base article.

  1. ESXi host cannot initiate vMotion or enable services and reports the error: Heap globalCartel-1 already at its maximum size. Cannot expand (2085618)
  2. VMware ESXi 5.x host experiences a purple diagnostic screen mentioning E1000PollRxRing and E1000DevRx (2059053)
  3. Manually deleting linked clones or stale virtual desktop entries from the View Composer database in VMware View Manager and Horizon View (2015112)
  4. Installing async drivers on VMware ESXi 5.0, 5.1, and 5.5 (2005205)
  5. Installing vCenter Server 5.5 best practices (2052334)
  6. Purging old data from the database used by VMware vCenter Server 4.x and 5.x (1025914)
  7. Investigating virtual machine file locks on ESXi/ESX (10051)
  8. Re-pointing and re-registering VMware vCenter Server 5.1 / 5.5 and components (2033620)
  9. Collecting diagnostic information for VMware ESX/ESXi using the vSphere Client (653)
  10. Determining Network/Storage firmware and driver version in ESXi/ESX 4.x and ESXi 5.x (1027206)
  11. Correlating VMware products build numbers to update levels (1014508)
  12. Resetting the VMware vCenter Server 5.x Inventory Service database (2042200)
  13. Installing or upgrading to ESXi 5.5 best practices (2052329)
  14. Commands to monitor snapshot deletion in VMware ESX/ESXi (1007566)
  15. Restarting the Management agents on an ESXi or ESX host (1003490)
  16. Unmounting a LUN or detaching a datastore/storage device from multiple VMware ESXi 5.x hosts (2004605)
  17. Upgrading to vCenter Server 5.5 best practices (2053132)
  18. An ESXi 5.x host running on HP server fails with a purple diagnostic screen and the error: hpsa_update_scsi_devices or detect_controller_lockup_thread (2075978)
  19. Methods for upgrading to ESXi 5.5 (2058352)
  20. VMware Response to CVE-2015-0235 – glibc gethostbyname buffer overflow, aka “Ghost” (2105862)

Horizon View PCoIP issues?

Here’s our latest top list of KB articles you should know about when encountering issues with PCoIP with Horizon View. It can be a tricky thing to configure and troubleshoot even for the best of us, so here’s some golden nuggets to help you on your way.

New Free Webinars

VMware Support Delivery has announced a new series of webinars for our customers. Customers can join these live sessions on Thursdays. There is something for both beginners and more advanced customers. Anyone that is unable to attend the live events will be able to view the recorded versions of the sessions on the Friday of the same week.

To register to these webinars, open the attached 2015 Webinar catalog [pdf].

All webinars start at 15:00 GMT and will run for 45 – 60 min

26th Feb Journey to the Horizon from View to FLEX
(LEVEL) Beginner – Intermediate
* Wide focus from Horizon View over Mirage to FLEX
* New features in View, technology and features behind Mirage and FLEX
* Best practices for successful implementations and known issues

5th March vSphere Data Protection Extra
(LEVEL) Intermediate
* Broken Comms to vCenter
* Some MCS/GSAN views
* Manual Disk Restore via command line
* VMRun
* Q+A

12th March vCloud Director – Design and Scale
(LEVEL) Intermediate
* Highlight a recommended design
* How you can scale that design without hitting the config maximums and still getting the most out of your setup
* Some commonly encountered issues that occur due to bad practice rather than bad design

19th March vRealize Business
(LEVEL) Beginner
* vRB Standard: “How much does my VM cost?”
* vRB Advanced: “How much does my IT cost?”
* vRB Enterprise: “Are my IT Providers complying with their SLA’s?”

26th March NSX
(LEVEL) Beginner
* SDDC and network virtualization (concepts and connection between them)
* NSX components and features explained
* A typical lab walk-through with commands
* Q&A

9th April SSL Certificate handling in vSphere 6.0
(LEVEL) Beginner
* What’s new in 6.0
* Introduction to VECS and VMCA
* Demo of common replacement tasks
* Q&A

16th April vRealize Automation
(LEVEL) Intermediate
* Tuning for scale

23rd April vCloud Air – Disaster Recovery
(LEVEL) Intermediate
* What’s new
* Architecture
* How does it work
* Use case study

30th April Introduction to vRealize Orchestrator
(LEVEL) Beginner
* Orchestrator Overview
* What’s new in 6.0
* vRealize Orchestrator Elements
* Create a Simple Workflow
* Workflow Parameter Binding
* Invoking/Creating Actions

7th May Database maintenance
(LEVEL) Intermediate
* Backing up your database
* Getting the best performance from your vCenter
* Avoiding corruption on the vCenter appliance
* Q+A

14th May Overview of Storage I/O Control
(LEVEL) Intermediate- Advanced
* Why SIOC
* SIOC features
* Noisy Neighbour
* How SIOC helps
* Shares and increasing priorities
* Recommended latency thresholds
* Limit IOPS and SIOC

21st May What’s new in vSphere 6
(LEVEL) Beginner
* An overview of new features in vSphere 6
* Feature changes from vSphere 5.5
* New best practices

28th May vSphere Networking – Best Practices and Troubleshooting
(LEVEL) Beginner – Intermediate
* NIC Teaming
* Redundancy and Load Balancing
* VLANs
* vDS
* Common Issues

4th June Datacentre to vCloud Air over IPSec VPN
(LEVEL) Intermediate
* Overview of vCloud Air and vCloud Air networking
* Discussion on IPSEC VPN and how it is implemented in vCloud Air
* Setup example to an Edge Gateway in vCloud Air

11th June Migrating workloads to vCloud Air with vCloud Connector and Datacentre Extension
(LEVEL) Intermediate
* What is vCloud Connector and what does it do
* Configuration and setup of vCloud Connector Server and Node
* Copy templates from private datacentre to vCloud Air
* What is the Datacentre Extension
* Additional setup of vCloud Connector for Datacentre Extension
* Demonstration of a vm being stretched to vCLoud Air

Ghost – glibc gethostbyname* buffer overflow

In case you missed it, on January 27th, 2015 a buffer overflow vulnerability in the glibc gethostbyname() function was disclosed. The issue is identified by CVE-2015-0235 and was given the name “Ghost.”

The VMware Security Engineering, Communications, and Response group (vSECR) began investigating this issue immediately.

The security blog at VMware released a blog post concerning this vulnerability, and a KB article was published:
VMware Response to CVE-2015-0235 – glibc gethostbyname buffer overflow, aka “Ghost” (2105862).

VMware has an established software security engineering group that integrates these techniques into the software development cycle, provides security expertise, guidance on the latest security threats and defensive techniques, and training within the development organization. This group is also responsible for driving VMware products through external security accreditations and certifications.

Many VMware products, including vSphere™, VMware vCenter™ Server, and vCloud Networking and Security (vCNS) have achieved Common Criteria certification under the Common Criteria Evaluation and Certification Scheme (CCS).Common Criteria is an international set of guidelines (ISO 15408) that provides a common framework for evaluating security features and capabilities of Information Technology (IT) security products.

For more information, visit VMware’s Common Criteria and FIPS-140 Certifications.

Top 20 Horizon with View KB articles

announcementHappy New Year VMware View implementers! We have a fresh new top 20 list of VMware View specific KBs to help you avoid these issues. Pass it on!

  1. Manually deleting linked clones or stale virtual desktop entries from the View Composer database in VMware View Manager and Horizon View (2015112)
  2. Generating and importing a signed SSL certificate into VMware Horizon View 5.1/5.2/5.3/6.0 using Microsoft Certreq (2032400)
  3. Pool settings are not saved, new pools cannot be created, and vCenter Server tasks are not processed in a Horizon View environment (2082413)
  4. VMware Horizon View Best Practices (1020305)
  5. Finding and removing unused replica virtual machines in the VMware Horizon View (2009844)
  6. Network connectivity requirements for VMware View Manager 4.5 and later (1027217)
  7. Collecting diagnostic information for VMware Horizon View (1017939)
  8. Forcing replication between ADAM databases (1021805)
  9. Manually deleting replica virtual machines in VMware Horizon View 5.x (1008704)
  10. Connecting to the View ADAM Database (2012377)
  11. Restart order of the View environment to clear ADLDS (ADAM) synchronization in View 4.5, 4.6, 5.0, and 5.1 (2068381)
  12. Removing a standard (replica) connection server or a security server from a cluster of connection/security servers (1010153)
  13. Provisioning View desktops fails due to customization timeout errors (2007319)
  14. Generating a Horizon View SSL certificate request using the Microsoft Management Console (MMC) Certificates snap-in (2068666)
  15. Performing an end-to-end backup and restore for VMware View Manager (1008046)
  16. Manually deleting linked clones or stale virtual desktop entries from VMware View Manager (1008658)
  17. View Connection Server reports the error: [ws_TomcatService] STDOUT: java.lang.OutOfMemoryError: Java heap space (2009877)
  18. Location of VMware View log files (1027744)
  19. Troubleshooting Persona Management (2008457)
  20. Administration dashboard in VMware Horizon View 5.1/5.2/5.3 reports the error: Server’s certificate cannot be checked (2000063)