Friday, 30 June 2017

A file that is required cannot be installed because the cabinet file .cab has an invalid digital signature. This may indicate that the cabinet file is corrupt.

When installing or upgrading the XIA Configuration Server you see the error
"A file that is required cannot be installed because the cabinet file <path>.cab has an invalid digital signature. This may indicate that the cabinet file is corrupt."

This is typically caused in a disconnected environment where the trusted certificate authorities are not updated automatically. The system can therefore not validate the certificate that was used to sign the XIA Configuration Server installer.

To validate the signature, right click the installer and select properties, and then view the Digital Signatures tab.


Select the signature and click Details, issues with the signature will be displayed here.


Clicking View Certificate and then viewing the Certification Path tab will display the certificates that are required to complete the chain.



More Information
For more information about disconnected environments please see the following Microsoft article
https://support.microsoft.com/en-us/help/2813430

Resolution
If any of the certificates from the trust chain displayed in the Certification Path tab are missing they can be manually downloaded from the DigiCert site.
https://www.digicert.com/digicert-root-certificates.htm

The required certificates should then be installed into the Trusted Root Certification Authorities certificate store.




















Thursday, 22 June 2017

Can't remove HP Printer on Windows 10, status: Removing Device

You may find when you're trying to remove a HP printer on Windows 10 that you can't and the printer is stuck in printers in control panel.


Clicking Remove Device does nothing and the status of the printer is displayed as Removing Device. Rebooting does not resolve the issue.

Attempting to uninstall the HP software hangs during the uninstallation.

The method I used to resolve this issue was as follows


  • Reboot the computer and login as the built-in Administrator account.
  • Check the Print Spooler service is running.
  • Goto device manager and uninstall the WSD Print Provider for this printer.


  • Then remove the Software devices related to the printer.

  • If you go back to the printer you will see that the icon has changed.


  • Reboot the computer again, and login as the built-in Administrator account and then you should now be able to remove the printer.

Wednesday, 21 June 2017

Installer created by AdvancedInstaller by Caphyon does not elevate UAC to administrator correctly on uninstall - "A program required for this install to complete could not be run"

We've recently had issues with installers created by AdvancedInstaller by Caphyon that do not elevate UAC to administrator correctly on uninstall. This was causing one of our custom actions to fail on uninstall.

Which lead to a "A program required for this install to complete could not be run" error.

The confusion here seems to be that the install gives you an option to Run as Administrator, however this does not apply to the uninstallation.



For this to work you must select the following option hidden in the Themes section.







Thursday, 18 May 2017

Copying files is painfully slow on Windows 10

Today I've been trying to copy files between two very fast SATA SSD drives.

I know that copying a large number of small files is slow on Windows already but this was excruciating.

The first thing I tried helped a lot, which is temporarily turning off Windows Defender. Obviously this isn't ideal but you can see the performance increase from the red line.


Simply click Start and search for Defender


Open Windows Defender Security Centre

Goto Virus & Threat Protection

Goto Virus & Threat Protection Settings

Turn off Real-Time Protection and Cloud-based protection


 Don't forget to turn them back on after copying your files!

 

Monday, 15 May 2017

Why is FireFox using / listening on port 80

After a short moment today I was wondering why FireFox was listening on TCP port 80 and stopping IIS from starting because of

netstat -anb which gives the following.

 [firefox.exe]
  TCP    127.0.0.1:52243        127.0.0.1:52242        ESTABLISHED
 [firefox.exe]
  TCP    127.0.0.1:60137        127.0.0.1:443          TIME_WAIT
  TCP    192.168.1.3:80         0.0.0.0:0              LISTENING
 [Skype.exe]

Well it's not it's just the order Netstat reports in, and of course it was Skype blocking the port which can be configured with this checkbox on the connection tab! Sanity restored.


Monday, 8 May 2017

Windows Server 2016 or Windows 10: Date and time "Some settings are managed by your organization".

When you're using the new "Modern" date and time settings in Windows Server 2016 or Windows 10 you may find that you can't set the correct date and time and the value "Some settings are managed by your organization".





The simplest way around this is to go back to the proper control panel using Start, Run, "Control.exe" and searching for "Set the date".





Within here you can set the date and time manually as required



Wednesday, 3 May 2017

Azure cmdlets Get-AzureRmAlertRule and Get-AzureRmRoleAssignment report "api-version=) is required for all requests"

When you use the Azure PowerShell cmdlets such as Get-AzureRmAlertRule and Get-AzureRmRoleAssignment you might see the following

MissingApiVersionParameter: The api-version query parameter (?api-version=) is required for all requests.


This can occur if there are hash symbols in the resource name or resource type parameters.

For example "CDD1EE35DC872C48F799BAC150FBB128E702BB9C##North Europe#'"


You must encode these parameters, replacing the hash # symbols with %23 - for example
"CDD1EE35DC872C48F799BAC150FBB128E702BB9C%23%23North Europe%23'" and then run the command again