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Sysadmin Tips

Invalid Microsoft Office 2016 license overrides Office 2019

 1001 invalid microsoft office 2016 license 1

Issue

A Windows 10 PC has Microsoft Office 2016 installed that was activated with some sort of corporate/business license. The license is no longer valid and occasionally throws warnings about possible software counterfeiting.

A user has a valid MS Office 2019 Home and Business license. After uninstalling MS Office 2016 and installing Office 2019, nothing seemingly changes - MS Office still appears as Office 2016 activated with the same invalid corporate license, even though Apps in Windows Settings and Control Panel correctly shows that Office 2019 is installed.

Read more: Invalid Microsoft Office 2016 license overrides Office 2019

L2TP/IPsec stopped working in Windows 11 / Windows 10

Issue

Windows 11 PCs suddenly stopped connecting to L2TP/IPsec VPN hosted on SonicWall firewall. The following error is displayed immediately after clicking Connect:

The L2TP connection attempt failed

Can't connect to VPN
The L2TP connection attempt failed because the security layer encountered a processing error during initial negotiations with the remote computer.

Read more: L2TP/IPsec stopped working in Windows 11 / Windows 10

Blue Sherpa application doesn't detect Yeti Nano microphone

Issue

Blue Sherpa application cannot detect plugged in USB Yeti Nano microphone. The following message is displayed.

Blue Sherpa - oh no!
oh no!
It appears that you don't have any devices connected. If you do have a device connected and it's not showing up, please unplug the device, and plug it back in.

Unplugging and re-plugging the devices, restarting the PC, and re-installing the application doesn't make any difference.

Read more: Blue Sherpa application doesn't detect Yeti Nano microphone

Multiple RDP (Remote Desktop) sessions in Windows 11

Remote Desktop Connection

To enable concurrent Remote Desktop (RDP) sessions in Windows 11, you need to make a small change to termsrv.dll file. This file is located in C:\Windows\System32 folder. Before modifying termsrv.dll for the first time, you need to take ownership and assign yourself full permissions. You also need to stop the Remote Desktop service (TermService), if it's running.

DLL files can be modified using any HEX Editor (for example Tiny Hexer). You can do this yourself by replacing the strings shown below, or just download patched versions from this page.

Read more: Multiple RDP (Remote Desktop) sessions in Windows 11

  1. Can't connect to VPN - A connection to the remote computer could not be established
  2. Hyper-V Windows cannot find the Microsoft Software Licence Terms
  3. Users cannot modify shared calendar Color Categories
  4. MS Outlook - Cannot expand the folder
  5. Can't install TeamViewer - already installed on this computer...
  6. Dell Inspiron - no sound. This device cannot start
  7. Nitro PDF creates empty debug.log files
  8. This advertised application will not be installed (.msi)
  9. MS Outlook doesn't save custom emails in "From" field
  10. Sent emails saved twice in Exchange Shared Mailbox Sent Items

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