Welcome to my IT corner, where I've gathered all the nifty IT stuff that I find interesting and useful. Here, I share practical tips, tools, and notes from my experience to help solve tech issues and boost productivity. Hope you find it useful—thanks for stopping by! Alexander Reydman
Friday, July 7, 2023
Friday, June 2, 2023
5-minute wait when you power cycle Fiber Optic router
Apparently, there are fiber optic routers out there that require a 5-minute wait when you powercycle them. Crazy, right? Always something new to discover in the world of technology.
Thursday, June 1, 2023
"Hard match" for ADConnect
"Hard
match" for ADConnect
On user properties go down and find On-premises immutable ID (in this case is
QOqq1+9+7ESYAJc+xpRKAA==)
of account that will be deleted.
Then collect Object ID from user that will stay
Pause synchronization by opening Azure AD connect application
Delete 2 times user duplicate ( with no files
attached)
Verify msds consistansy is not empty
If it empty use
object Duig to paste it to ms ds
Make sure user deleted twice ( from deleted users as well)
In case its not installed ( not Active directory
teamstransport case)
install-module azuread
install-module msonline
Run only if session ended ( computer restarted)
connect-azuread
connect-msolservice
Set-AzureADUser -objectID XXXXXXX -ImmutableId XXXXXXX
Object ID its “good user” , and Immutebleld ID its from
deleted user, replace and run sync
Set-AzureADUser -objectID 6215c50a-242a-4723-89aa-xxxxxxxxxxxx
-ImmutableId LBWfMzBWxxxxxxxxxfaWSILpw==
Start-ADSyncSyncCycle
Delta
Run Synchronization Service Manage to monitor synchronization
Tuesday, May 16, 2023
Change number of monitors at Remote Desktop session
The connection settings are saved to a hidden RDP file in the Documents folder by default. So, you can also open this file with a text editor and directly edit the values there to set up the multi monitor remote connection. Here are the steps to do so:
- Navigate to the Documents folder and make sure Show hidden items is enabled.

- Open the RDP file with a text editor, add the following line, and then save the file:
use multimon:i:1
- If the display order is incorrect, execute the
mstsc /lcommand in CMD to view all the monitors on your system. They’ll be listed as 0, 1, 2, and so on.
- Next, you can adjust the values for the
selectedmonitorsline to rearrange the monitors in the correct order. - For instance, if you have 3 monitors listed as
selectedmonitors:s:0,1,2, you could edit it toselectedmonitors:s:1,2,0to change the display order, orselectedmonitors:s:0,2to use 2 of 3 monitors. - Remember to save the settings once you figure out the correct order.
Monday, May 1, 2023
Golden rule -11
Updates are important!
Although there are occasions when updates cause a new problem to appear, generally speaking, they “help” more than they “hurt”. Not only do updates fix known bugs in software and operating systems, but they plug critical security holes that could potentially cause harm.
Friday, April 28, 2023
Golden Rules - 10
Have Disaster Recovery plan!
DRP template
Meaning:
Always prepare for the worst-case scenario. A Disaster Recovery plan ensures your organization can recover critical systems, data, and operations quickly after an unexpected event—like hardware failure, cyberattacks, natural disasters, or human error.
Why it matters:
-
Minimizes downtime: Reduces financial and operational impact.
-
Protects data: Ensures backups are available and restorable.
-
Maintains reputation: Customers and stakeholders see reliability.
-
Regulatory compliance: Many industries require documented DR plans.
-
Preparedness: Helps staff know exactly what to do during emergencies.
Key Components of a DR Plan:
-
Inventory: Identify critical systems, data, and applications.
-
Backup Strategy: Regular, automated backups with offsite or cloud storage.
-
Recovery Procedures: Step-by-step instructions for restoring systems.
-
Roles & Responsibilities: Assign clear tasks to team members.
-
Testing & Updates: Regularly test the plan and update it as systems change.
-
Communication Plan: Notify stakeholders and employees efficiently during an incident.
Best Practices:
-
Keep the plan simple and actionable.
-
Use redundant solutions (e.g., multiple backup locations).
-
Document Recovery Time Objectives (RTOs) and Recovery Point Objectives (RPOs).
-
Include scenarios for both minor incidents and major disasters.
Wednesday, April 5, 2023
MailMaestro, your personal AI email assistant -great tool for people who not fluent in English
This post for MailMaestro. I've been using it at work for about a month now, and I have to say, it's the best program I've installed in the past year. It's been amazing, especially for someone like me whose English isn't perfect and who writes a lot of letters. The quality of my emails has improved significantly.
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