Expand Ubuntu Disk / Partition after Hyper-V Disk Expansion

I have an Ubuntu VM running in Hyper-V (or HyperV if you’re lazy) that I had to expand. I used the GUI in Hyper-V Manager to add some space first and rebooted my VM. After that I was able to utilize the new space by following these steps:

First, open Up Disks app and make sure your “VM” is seeing the free space

Look at the beautiful free space

After that, open up terminal and install some cloud tools that’ll help us out.

sudo apt-get install cloud-guest-utils

After that, run this command to use all that sweet new space.

sudo growpart /dev/sda 1

That’s it! It grew to use all the free space and we were good to go.

Completely Remove Firefox Tab Bar

If you’re a user of Tree Style Tabs or enjoy vertical tabs, use this tweak to remove the tab bar at the top of your screen where tabs used to live.

You can edit the userchrome.css file by using the following steps:

  • Go to about:support in Firefox
  • Scroll to the Profile Folder line and click “Open Folder”
  • Make a new folder called “chrome”
  • Inside this new chrome folder, make a file called userchrome.css

Once in the file, add your tweaks! To remove the tab bar, use this snippet of code:

#TabsToolbar {
  visibility: collapse !important;

For other ideas and customizations with userchrome.css, take a look at the FirefoxCSS Subreddit

Ubuntu – Cannot Mount Share – Read-Only

I ran into this one today on a fresh Ubuntu install. I was attempting to mount my NAS and configured fstab. I went to mount the share and got this error:

mount: /media/Data: cannot mount //[SHARE]/Data read-only.

The fix was to install cifs-utils via apt-get install cifs-utils

Afterwards, I was able to mount the share successfully. Of course, there may be a few other causes for this error so be sure you fit this scenario.

SOLVED: Missing Office365 for Web App Tiles / Links

A real hand-banger of an issue thanks to Microsoft’s love for hiding settings behind classic admin centers. After enabling Office for Web and OneDrive (or Sharepoint) for several users, they were unable to edit Office documents in Office Online / Office Web Apps via www.office.com. They didn’t even show up!

What Was Being Seen:

Where the apps at?

What Should Be Seen:

Apps showing in better times

The resolution was classic Microsoft. After making sure that the users had the correct applications assigned, namely Office Apps for Web and either SharePoint or OneDrive, we had to navigate to the SharePoint Admin Center, click on Settings, and then classic settings.

Once there, the first option was the cause of our trouble. Make sure you don’t hide the icons!

Forwarding Ubiquiti Cameras Over WAN / Double-NAT

I’ve had to do this at a job recently that had to monitor access to sensitive offices and vaccines. This works internally (with a double-NAT) or over WAN with a change or two

Essentially, the steps are:

1) Setup camera with static, local IP

2) Login to camera and configure NVR IP as the WAN IP of the UDM Pro / NVR

3) Login to UDM Pro and configure WAN Local Firewall Rule to allow all traffic from static IP you set in Step 1 (if going over WAN, use WAN IP of location with Ubiquiti camera)

4) Login to Protect app in UDM Pro, add camera

Deleting Emails from Gmail or G Suite Mailboxes

Since being thrust into using GSuite / Google Workspace, I found the GAM tool on Github incredibly valuable.

We recently have a spear-phishing attack sent to a number of users in finance pretending to be the CFO. I was able to test and then remove all the emails from users mailboxes by using the following command:

gam all users delete threads query from:[xyz]@gmail.com doit

You can read more on the command here.

Allow External Senders to Email Google Group

I encountered this one recently. Google doesn’t make it simple (or clear) how to allow external people to send emails to a Google Group (which most people use as the equivalent of a distribution list / Office365 group).

In Google Admin, navigate to the Google Group and check off “Allow” (a checkmark) where Publish Posts and External intersect (seen below with the number 1 in red)

That’s it! External users will now be able to email the group.

Audit Error – Office365

Recently, I was trying to perform an audit search on an Office365 organization and found auditing wasn’t enabled. When I tried to do it straight from the audit screen, I encountered this error:

Sorry! We couldn’t update your organization settings. Please try again.

I went straight to PowerShell and ran Get-AdminAuditLogConfig | FL Unified* and it was not enabled.

To resolve this, I ran Enable-OrganizationCustomization 

And then I ran the Powershell command Set-AdminAuditLogConfig – UnifiedAuditLogIngestionEnabled $true

And that did it!

ESXI Error: Could not find a trusted signer: certificate is not yet valid

It’s been a while and there is plenty of reasons for that, but namely… I got a new job!

Anywho, here is a good one I encountered when trying to update an ESXI host.

Could not find a trusted signer: certificate is not yet valid

Failed to setup patcher for upgrade

Full error and command

I hadn’t used this host in a hot minute and one thing I know is that SSL Certs are time/date-based. I took a look at the date and time in ESXI and lo and behold found an incorrect date.

The incorrect date!

After setting the correct date, I re-ran the command and the ESXI update completed successfully. I also set the server to use NTP so this doesn’t pop up again.

Enable / Allow Sending From an Alias in Office365

The long-requested ability to send emails from an alias in Office 365 has been finally released!

When you use an alias to send an email, the From and Reply to field for the recipient will appear to be the alias meaning the recipient will only see the alias and not your primary email address.

To make this happen, simply login to your Office365 tenant via Powershell and run the following command:

Set-OrganizationConfig -SendFromAliasEnabled $true

That’s it! Within a few minutes it should begin working.

To send from the alias, make sure you are showing the From field by clicking Options > From, shown below


More information can be found on Microsoft’s website