---
title: "Windows articles — Ivan Kahl"
description: "Articles by Ivan Kahl about Windows."
url: https://ivankahl.com/blog/tags/windows/
---

Blog · Topic

# Windows

5 articles tagged Windows.

## 2019

27 Mar 2019

### [Enabling and Disabling Hyper-V in Powershell](https://ivankahl.com/blog/enabling-and-disabling-hyper-v-in-powershell/)

Running VirtualBox or other virtualization software on Windows 10 often means turning Hyper-V off. Two PowerShell commands make enabling and disabling it quick.

1 min read

## 2018

14 Aug 2018

### [The 'humbs.db' attachment in Sage CRM emails](https://ivankahl.com/blog/the-humbs-db-attachment-in-sage-crm-emails/)

A mysterious humbs.db attachment can get Sage CRM emails flagged as spam. Disabling thumbnail caching and removing existing attachments resolves it.

1 min read

03 Aug 2018

### [Disabling checkpoints in Hyper-V](https://ivankahl.com/blog/disabling-checkpoints-in-hyper-v/)

Hyper-V's automatic checkpoints can slow down shutdowns and corrupt virtual drives when merging fails. Disabling them per virtual machine avoids the problem.

1 min read

01 Aug 2018

### [Fixing "Class not registered" error in Sage CRM .NET pages](https://ivankahl.com/blog/fixing-class-not-registered-error-in-sage-crm-net-pages/)

A July 2018 Windows update can break Sage CRM .NET pages with a "Class not registered" error. A small IIS authentication change resolves it.

1 min read

13 May 2018

### [Fixing CredSSP encryption oracle remediation in RDP](https://ivankahl.com/blog/fixing-credssp-encryption-oracle-remediation-in-rdp/)

After the CredSSP security patch, RDP connections to unpatched servers fail with an encryption oracle error. A temporary registry change gets connections working again.

2 min read