Mailbox Calendars Permissions For All Users

Following power shell commands can be used to get a list of all Exchange user's mailbox calendar permissions. Output will list all users along with the users that have permission to their calendars and also permission level. $Mailboxes = (get-mailbox -database dbname) $Mailboxes | ForEach {Get-MailboxFolderPermission -Identity “$($_.alias):\Calendar” | Select User, Identity, AccessRights} You can...

Adding Phone Number To Teams

Recently, we have had issues where we were setting up Apple enrolments on Microsoft Intunes which requires an Apple ID which requires an email address and phone number to verify the identity. Engineers were using their personal phone numbers and when the cert expires after a year, we run into an issue if that Engineer...

The ACE doesn’t exist on the object Mailbox Permissions

If you have recently upgraded from exchange 2013 or older to 2016/2019, you might experience the following when you try to remove mailbox permissions using exchange PowerShell. It will let you remove the permissions using exchange admin centre without any error sometimes but when you go back to check the permissions, you will notice that...

Insufficient System Resources Exist to Complete Error On Active Directory Domains and Trusts

Issue I have recently come across a weird issue where when we try to add / remove a UPN suffix from AD Domains and Trusts, we would get the following error. This started happening after we patched our domain controllers in January 2022. Our PDC is at Windows 2012 R2 version. It’s a well-known issue...

Emails Being Rejected on O365: Bare Line Feed Characters

This usually happens when a 3rd party server is emailing you which includes characters which causes emails to be rejected. Microsoft used to remove these characters before, but they stopped doing so. As per Microsoft documentation, receive connector need to be adjusted to fix this but that applies to on-prem exchange only. I couldn’t find...

Upgrading Windows 7 To Windows 10 Issues

I ran into several issues recently where I was helping someone to upgrade few of their PCs from Windows 7 Pro to Windows 10 Pro, so I thought I will share my experience. Following are some of the things I did prior to running the update and most of the machines I was able to...

This User’s On-premises Mailbox Hasn’t Been Migrated To Exchange Online In Microsoft Office 365 – New Office 365 Tenant

Issue We get the following message after assigning the license to a synchronized user in new Office 365 Tenant and it gets stuck there. This can happen when migrating from on-premise Exchange to newly created Office 365 and we use AD Connect to sync AD accounts to office 365. This can happen due to some...

“Cannot Write to Disk” Error On Windows

Issue You do not see an option to create a new folder or file or if you try to copy something on a drive, you get “cannot write to disk”.  This can happen to one, few, or all drives. I confirmed that the disk status was NOT set to “read only” or permissions issue. Fix...

Citrix VDA Gets Unregistered As Soon As App Is Launched

Recently, I have experienced an odd issue which took several days to get to the root cause of it and getting it resolved. Issue: Citrix VDA Version 1912 CU2 gets unregistered as soon as an app is launched. End user would get an error “Could not open the app”. They had 2 VDAs and this...

Adding A Shared Mailbox on Citrix Secure Mail Along with your Primary Mailbox

How To Shared Mailbox in Citrix Secure Mail along with Main Mailbox?