PowerShell: The specified string is not in the form required for a subject
During the creation of a PowerShell SMA Runbook I was getting the following error message. This error appear when sending an automatic mail message with the send-mailmessage cmdlet. It only happens...
View ArticleVEEAM Task failed Error: Exception of type ‘System.OutOfMemoryException’ was...
Last week I had the following error when starting a Veeam backup job. I thought my proxy servers where out of memory, so I rebooted them. Then I started the backup jobs again, with no result. Solution:...
View ArticleInvoke-WebRequest : The response content cannot be parsed because the...
Yesterday I was facing this error when running a SMA Runbook with the invoke-webrequest cmdlet. For troubleshooting I had to enable SMA script logging for this runbook so I was able to see wats going...
View ArticleEnable safe mode Windows 8 or 10
Last week I was working on a young defect SSD powered computer running on Windows 10. Hitting the F8 key for enable the save mode while booting was almost impossible. Don’t know if the key is disabled...
View ArticleRemove Hyper-v node from SCVMM Failed: Error(25333)
In some situations (hardware failures etc.) it’s not possible to remove the Hyper-v cluster node nicely out of SCVMM. When removing the Hyper-v node from VMM it will throw an Error (25333) in SCVMM....
View ArticleWindows 10 Start menu search is not working
I had the annoying issue that my Windows 10 Search bar stops working for some reason. Trying to restart the services, restart Windows and kill the Cortana processes doesn’t work in my situation. After...
View ArticleConverting a VMWare CentOS VM to Hyper-v
After converting the VMDK I faced the issue that the VM Won’t boot without preinstalled Hyper-V drivers. Fixed this with regenerate the Initrd BEFORE converting to Hyper-v (VHDX).#CentOS 6 (some other...
View ArticleNo mapping between account names and security IDs was done.
Last day’s very busy with a small DevOps project in our company. Automating “bare metal deployment” of new Hyper-V Servers. We deploy the software with a combination of MDT and the brand new HP...
View ArticleID: 2912 | Details: Service unavailable (503) (0x801901F7) | NO_PARAM NO_PARAM
During the deployment of a new resource or adding a new resource there is a possibility that you can face the following error: An internal error has occurred trying to contact the ” server: NO_PARAM:...
View ArticleDynamic Group population and Role based Access PowerShell
For a customer i created a script which create new groups for all kind of unique jobtitles available in Active Directory. After the creation of all groups it loops through all users and add these to...
View ArticleUnattended SCOM Agent installation Windows
Command line is your friend when the SCOM Agent auto deploy functionality does not work for some reason. Because some firewall rules are disabled or something like that. Or if you need to create a SCCM...
View ArticleAdd new email alias Office365
One of our customers changed the company name. So the alias of all there SharedMailboxes on office365 needed to be changed. This script below contains 2 functions, the fist one is for adding an extra...
View ArticleVeeam backup copy to multiple offline external disks
Wondering how to create an offline disk back-up copy with more than one USB Disk? And not want to spend your IT budget on “Veeam cloud connect” This is originally not possible with the Veeam GUI...
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Check DNS Entries with PowerShell
In a dynamic environment it’s hard to keep your DNS up-to-date. Updating the DNS server is a task which is mostly forgotten during server maintenance. Created just a simple one-liner for checking the...
View ArticleWARNING: The names of some imported commands from the module “” include...
When you use one of the VERB types in your brand new function names, you get the following very annoying message: WARNING: The names of some imported commands from the module ‘Set-ROBVIT-Function’...
View ArticleGenerate CPU Load with PowerShell
In some situations you need to stress your system a little (for example: to check if your monitoring is functioning properly.) Installing some random .exe files from some anonymous websites is not...
View ArticleHyper-v AVMA Key and related stuff
Just sharing some notes. What is Microsoft AVMA? “AVMA lets you install virtual machines on a properly activated Windows server without having to manage product keys for each individual virtual...
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Windows task scheduler: The operator or administrator has refused the request
After implementing scheduled tasks on server 2016 and 2019 we have sometimes the following annoying message. Trying literally everything. Finally we did solve this by adding an extra checkmark in the...
View ArticlePowerShell password expiration pop-up
Last week I got a question about some old VB script which create a popup when the password of the Windows user is going to expire. They couldn’t use the old VBScript because they make use of both...
View ArticleKubernetes The connection to the server :6443 was refused – did you specify...
In the following upcoming posts ill post some issues and resolutions in my journey installing a kubernetes cluster. Kubernetes cluster is offline after rebooting the master. When running: kubectl...
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