MailboxImportRequest Fails

I ran into an issue with a Powershell script I wrote recently, where I received this error:

The name must be unique per mailbox. There isn’t a default name available for a new request owned by mailbox xyz

Basically, a record is kept for completed mailbox move requests, and if you do too many for one mailbox, you get the above error. Don’t worry! Just run the following command in PS to clear away the completed request records, and you’ll then be able to run the import request!


Get-MailboxImportRequest -Status Completed | Remove-MailboxImportRequest

That’s it!

No Access to VDP Web Interface

I ran into an issue today that I was banging my head against until I found an obscure Vmware article.

Basically, when I tried to access my VDP appliance through the browser via port 8545, Chrome and IE would both say the connection was dropped or not accessible. “Failed to load” or “is not available” were the other errors.

This is the article I found:

When Chrome/Firefox changed some settings regarding SSL certificates, it basically broke being able to access VDP devices that hadn’t been updated in a while. The above article has a Hotfix that you can install to fix the issue. It did for me!

Converting an Office365 Recipient Mailbox to a Shared Mailbox

Quick and easy tip today. A user left the company and to free up the license used on Office365 but keep the user’s mailbox, you can easily convert the mailbox to a shared mailbox, which you don’t get charged for on Office365.

Basically, go into Exchange Admin Center > Recipients > Choose the Mailbox you want to convert  and on the right side, click “Convert to Shared Mailbox”


That’s it!

Java Error 1603

While trying to install Java today, I encountered an error that wouldn’t go away: Error 1603. Scouring Technet forums, blogs, etc. no one had a real sense of what the cause was. Some said it was an old Windows Update. Some said it was a bad Java installer package.

Eventually I found my solution: I was connecting through LogMeIn to the device. I ended the LogMeIn task and process, RDPed in, installed Java… and voila! It worked. Re-enabled LogMeIn and I was on my way.

Allow External Senders to Send to an Office 365 Distribution List

Simple one here – a VIP relies on a Gmail account when the company is on Office365. To allow the VIP to send to a distribution list, I had to do the following:

1) Open Exchange Admin Center
2) Click on Recipients and then Groups
3) Select the distribution group
4) Click the edit button edit icon


5) Click Delivery Management and select “Senders inside and outside of my organization


6) Then just click Save! save button

You can also use this area to block or allow certain senders to distribution lists by adding emails to the box below.


ERROR: The Windows Filtering Platform has blocked a packet

One of my servers has been getting numerous events logged saying “The Windows Filtering Platform has blocked a packet” with internal IP addresses usually listed.


I found that running these two commands quieted the logging:

auditpol /set /subcategory:”Filtering Platform Packet Drop” /success:disable /failure:disable

auditpol /set /subcategory:”Filtering Platform Connection” /success:disable /failure:disable

If you need any other commands, you can check out the full Microsoft article here:

Error Backing Up 0x807800C5

After a round of Windows Updates, I encountered the same error on two different servers at different clients. Both used BackupAssist that relied on Windows Server Backup. They both backed up to NAS’s but one NAS was connected as an iSCSI device and the other was mapped as a network share. The versions of BackupAssist were different, as well. One server was bare-metal, one was an ESXI VM. One was 2012 R1, one was 2012R2.

Among the things I tried were:

  • Changing the time of the backup
  • Resetting shadow copies
  • Changing maximum size for shadow copies
  • Changing the VSS mode
  • Checking the status of VSS writers
  • Restarting the servers
  • Restarting backup devices

Eventually I found the backup code, 0x807800C5, on both servers. Googling yielded nothing but a number of other people with the same error running everything from Windows 7 to Windows 2012. After a lot of troubleshooting, I ended up renaming the backup destination that Windows Server Backup used, which gave the backup a clean slate of sorts. Both backups have succeeded since then.


The full error I received was:

(There was a failure in preparing the backup image of one of the volumes in the backup set.). Please review the event details for a solution, and then rerun the backup operation once the issue is resolved.

How to Find Last Logon Time for Exchange Mailbox Users

The last logon time of an Exchange 2010/2013/2016 mailbox user can easily be found by running the Get-MailboxStatistics cmdlet in the Exchange Management Shell.


You can further sort the info by including and running the following command:

Get-MailboxStatistics -Server EXCH | Sort LastLogonTime -Descending

And export it to a CSV by adding an Export-CSV option like below:

Get-MailboxStatistics -Server EXCH | Sort LastLogonTime -Descending | Export-CSV c:\lastlogon.csv

Using WMIC to Uninstall Multiple Versions of Java

I can’t tell you how many times I have logged in to a computer just to see five or more versions of Java installed going back multiple versions. To uninstall ALL of them in one fell swoop without being prompted, I use this command:

wmic product where "name like 'Java%%'" call uninstall /nointeractive

Solving “Access is Denied, Unable to Remove Device”

I recently got stuck trying to remove a printer from a computer with the error “Access is Denied, Unable to Remove Device”. Here is how I fixed it:

First, stop the print spooler by opening an elevated command prompt and entering “net stop spooler” and press enter. Leave the window open.

Then head into the registry to: HKEY_CURRENT_USER\Printers\Connections and delete the offending printer

Next, go back to the command prompt and enter “net start spooler” and press enter.

That should do it!