Developer technologies | .NET | Entity Framework Core
A lightweight, extensible, open-source, and cross-platform version of the Entity Framework data access technology.
773 questions
2 answers
One of the answers was accepted by the question author.
How to use DateTime in LINQ when it's NULL
create table mytable (Birth datetime null) public class myModel { public Datetime Birth { get; set; } } var query = from aa in mydb.mytable select new cmyModel { Birth = aa.Birth } I get a message: Nullable object must have a value; If I make the data…
Developer technologies | .NET | Entity Framework Core
asked
2026-11-13T02:27:18.8333333+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(22.400000000000002, 77%, 12%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ECF%3C/text%3E%3C/svg%3E)
Corey Fleig
615
Reputation points
commented
2026-11-13T17:45:19.8466667+00:00
Corey Fleig
615
Reputation points
4 answers
CAN I OPEN EXCEL PLEASE!!!!!! MICROSOFT
PLEASE LET ME WORK!!!! OR I WILL FAIL THE EXAM Microsoft Excel
Microsoft 365 and Office | Excel | Other | Windows
Microsoft 365 and Office | Excel | Other | Windows
A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
3,841 questions
asked
2026-11-13T02:26:08.9666667+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(96, 78%, 19%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EJC%3C/text%3E%3C/svg%3E)
Jayanta Chowdhury
0
Reputation points
edited the question
2026-11-14T10:18:45.8766667+00:00
Stefan Blom
357.7K
Reputation points MVP
Volunteer Moderator
0 answers
Microsoft Edge Website Typo Protection falsely flags sikaiglobal.com as saiglobal.com
Hello Microsoft Edge Team, We are the legitimate owner of https://www.sikaiglobal.com/, the official website of SIKAI Global, a consumer technology accessories brand group. Microsoft Edge currently displays a Website Typo Protection warning, incorrectly…
Microsoft Edge | Website issues | Windows 10
Microsoft Edge | Website issues | Windows 10
Troubleshooting website display or functionality issues in Edge on Windows 10
1,759 questions
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(316.8, 49%, 40%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EPC%3C/text%3E%3C/svg%3E)
1 answer
hotmail work properly
My hotmail account could not be opened, your support opened it at 23 October 2023, but not up to date. Can you fix it please
Outlook | Windows | Classic Outlook for Windows | For home
Outlook | Windows | Classic Outlook for Windows | For home
Using Classic Outlook on Windows for personal email, calendar, and contact management
33,188 questions
asked
2026-11-13T02:24:22.8+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(172.8, 18%, 26%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EPG%3C/text%3E%3C/svg%3E)
Peter Gavin
0
Reputation points
answered
2026-11-13T03:00:28.49+00:00
Jonathan Deives
84,125
Reputation points
Independent Advisor
2 answers
Microsoft Outage Statuses
Where can we see WIP to all users and consumer? We all know Microsoft have an outage now but how can we monitor and get an ETA?
Outlook | Web | Outlook.com | Account management, security, and privacy
Outlook | Web | Outlook.com | Account management, security, and privacy
Managing personal Outlook.com account settings, security, and privacy
25,714 questions
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(105.60000000000001, 87%, 20%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EA%3C/text%3E%3C/svg%3E)
1 answer
Why can't I open Outlook?
I cannot open Outlook. Is there a widespread issue with Microsoft Outlook? It was working fine yesterday.
Outlook | Windows | Classic Outlook for Windows | For business
Outlook | Windows | Classic Outlook for Windows | For business
Using classic Outlook for Windows in business environments
30,309 questions
asked
2026-11-13T02:23:47.19+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(134.4, 17%, 23%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EMC%3C/text%3E%3C/svg%3E)
Mitchell Cora
20
Reputation points
commented
2026-11-14T02:18:32.9333333+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(265.6, 46%, 35%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ETD%3C/text%3E%3C/svg%3E)
Teddie Dang
2,245
Reputation points
Independent Advisor
2 answers
Microsoft Services
Hello, microsoft emails are currently still down in Singapore. Any idea when it will be up?
Microsoft 365 and Office | Other
Microsoft 365 and Office | Other
Miscellaneous topics that do not fit into specific categories.
9,676 questions
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(137.6, 19%, 23%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EA%3C/text%3E%3C/svg%3E)
2 answers
My MS Word application has stopped working
Till yesterday I had no issue with MS Word application. Today onwards it is not working and not even repairing itself. Could you please help me with his
Microsoft 365 and Office | Word | Other | Windows
Microsoft 365 and Office | Word | Other | Windows
A family of Microsoft word processing software products for creating web, email, and print documents.
3,057 questions
asked
2026-11-13T02:21:46.5066667+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(6.4, 19%, 10%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EPK%3C/text%3E%3C/svg%3E)
Pawan Kapoor
0
Reputation points
answered
2026-11-13T02:54:04.8433333+00:00
Jonathan Deives
84,125
Reputation points
Independent Advisor
2 answers
Microsoft cannot verify the license for this product. you should repair the office program by using control panel
"Microsoft cannot verify the license for this product. you should repair the office program by using control panel". I'mgetting this message while opening Microsoft Word. how to solve this problem.
Microsoft 365 and Office | Word | Other | Windows
Microsoft 365 and Office | Word | Other | Windows
A family of Microsoft word processing software products for creating web, email, and print documents.
3,057 questions
asked
2026-11-13T02:20:38.47+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(259.20000000000005, 34%, 35%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EAH%3C/text%3E%3C/svg%3E)
Ayesha Hussain Khan
0
Reputation points
answered
2026-11-13T02:55:44.16+00:00
TaoLi
120.6K
Reputation points
Independent Advisor
3 answers
Teams communities - Move to Work
I currently use personal Teams communities to communicate with staff. If I purchase Teams for work, can I move my communities from personal to work so I don’t lose my groups?
Microsoft Teams | Microsoft Teams for business | Other
Microsoft Teams | Microsoft Teams for business | Other
Additional features, settings, or issues not covered by specific Microsoft Teams categories
21,190 questions
asked
2026-11-13T02:19:52.2066667+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(128, 55.00000000000001%, 22%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EJB%3C/text%3E%3C/svg%3E)
Jill Boucher
0
Reputation points
commented
2026-11-14T10:11:20.8766667+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(92.8, 0%, 18%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EDT%3C/text%3E%3C/svg%3E)
Dora-T
2,255
Reputation points
Independent Advisor
2 answers
Unable to delete emails from the Outbox folder
I have an email stuck in my Outbox that I cannot delete. The system indicates that Outlook is in the process of sending it to the recipient. As a result, my Inbox is not updating on either my computer or my Apple device.
Outlook | Windows | Classic Outlook for Windows | For business
Outlook | Windows | Classic Outlook for Windows | For business
Using classic Outlook for Windows in business environments
30,309 questions
asked
2026-11-13T02:18:53.7466667+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(150.4, 48%, 24%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ECM%3C/text%3E%3C/svg%3E)
Collins Mara
20
Reputation points
answered
2026-11-13T02:37:04.3733333+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(227.2, 37%, 32%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EA%3C/text%3E%3C/svg%3E)
Aetherin
4,010
Reputation points
Independent Advisor
2 answers
cannot access Outlook or Copilot
yesterday, there were missing chats in Copilot windows early this morning I could not access Copilot or outlook, 4 hours ago there were various claims on social media regarding being locked out of Outlook and Copilot. Why doesn't Microsoft alert their…
Outlook | Windows | Classic Outlook for Windows | For business
Outlook | Windows | Classic Outlook for Windows | For business
Using classic Outlook for Windows in business environments
30,309 questions
asked
2026-11-13T02:17:09.5366667+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(288, 40%, 37%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EFA%3C/text%3E%3C/svg%3E)
Frank Aquilina
0
Reputation points
commented
2026-11-14T10:09:06.1133333+00:00
Dora-T
2,255
Reputation points
Independent Advisor
1 answer
Windows Deactivated itself.
This is the Third time that Windows randomly decided it would be a good idea to suddenly deactivate itself, I have had active windows for 3+ years I will not be spending another 200+ dollars just because windows thought it would be cool to deactivate.…
Windows for home | Windows 11 | Licensing and activation
5,547 questions
asked
2026-11-13T02:16:11.39+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(118.4, 20%, 21%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ECP%3C/text%3E%3C/svg%3E)
Collin Pingilley
0
Reputation points
commented
2026-11-13T14:38:27.69+00:00
EmilyS726
280.2K
Reputation points
Independent Advisor
1 answer
Outlook outage
Okay, MSN...what's the update now? All day, nuthin.
Outlook | Web | Outlook.com | Email
Outlook | Web | Outlook.com | Email
Sending, receiving, and organizing email in Outlook.com
11,898 questions
asked
2026-11-13T02:13:23.2866667+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(112.00000000000001, 77%, 20%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EGS%3C/text%3E%3C/svg%3E)
G. SCOTT SPENCE
0
Reputation points
answered
2026-11-13T02:50:28.8166667+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(64, 77%, 16%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ELB%3C/text%3E%3C/svg%3E)
Lester Bernard Reyes
86,755
Reputation points
Independent Advisor
3 answers
Is anyone else experiencing the same issue as me? I ran into an error when accessing Outlook this morning
I need to access Outlook for work this morning, but everything seems to be running very slowly.
Outlook | Web | Outlook on the web for business | Email
Outlook | Web | Outlook on the web for business | Email
Sending, receiving, and organizing email in Outlook on the web for business
3,033 questions
asked
2026-11-13T02:13:22.6966667+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(140.8, 9%, 23%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EBF%3C/text%3E%3C/svg%3E)
Baker Florence
20
Reputation points
answered
2026-11-14T01:00:05.0433333+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(38.4, 6%, 13%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EMN%3C/text%3E%3C/svg%3E)
Michelle Nguyen
2,860
Reputation points
Independent Advisor
1 answer
When will the system be operational?
I want to verify.When will the system be operational?
Microsoft Security | Microsoft Entra | Microsoft Entra ID
Microsoft Security | Microsoft Entra | Microsoft Entra ID
A cloud-based identity and access management service for securing user authentication and resource access
30,977 questions
asked
2026-11-13T02:11:46.2266667+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(313.6, 60%, 40%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EMN%3C/text%3E%3C/svg%3E)
Montiwa Ngamsert
0
Reputation points
edited an answer
2026-11-13T02:18:25.38+00:00
Sumit
45,076
Reputation points
Volunteer Moderator
1 answer
outlook problem
what wrong of outlook in email cannot be login in email
Outlook | Web | Outlook.com | Email
Outlook | Web | Outlook.com | Email
Sending, receiving, and organizing email in Outlook.com
11,898 questions
asked
2026-11-13T02:10:19.4866667+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(102.4, 27%, 19%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ENK%3C/text%3E%3C/svg%3E)
Norman Kwan
0
Reputation points
answered
2026-11-13T02:43:21.93+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(92.8, 25%, 18%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EIB%3C/text%3E%3C/svg%3E)
Ivan B
127.3K
Reputation points
Independent Advisor
1 answer
Why outlook is running extremely slowly and not displaying emails
I’m having trouble accessing my email via the Outlook app on my iPhone today. I also tried accessing Outlook from my laptop, but I still can’t get into my mailbox.
Outlook | Web | Outlook on the web for business | Email
Outlook | Web | Outlook on the web for business | Email
Sending, receiving, and organizing email in Outlook on the web for business
3,033 questions
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(51.2, 30%, 14%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ES%3C/text%3E%3C/svg%3E)
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(51.2, 90%, 14%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EAL%3C/text%3E%3C/svg%3E)
3 answers
Msoft 365 not operational, Outlook not accessible
US Pacific time zone, 6:03pm. Msoft service health status reports Outlook operational. Please note it is not operational at this time.
Outlook | Web | Outlook on the web for business | Email
Outlook | Web | Outlook on the web for business | Email
Sending, receiving, and organizing email in Outlook on the web for business
3,033 questions
asked
2026-11-13T02:06:05.51+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(284.8, 2%, 37%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ECF%3C/text%3E%3C/svg%3E)
Claudia Fitch
0
Reputation points
answered
2026-11-13T02:23:12.72+00:00
Sumit
45,076
Reputation points
Volunteer Moderator
2 answers
I haven't been able to access my Outlook email for many hours. How long will this problem persist?
Outlook on the web won't open, and the app hasn't updated.
Outlook | Web | Outlook.com | Email
Outlook | Web | Outlook.com | Email
Sending, receiving, and organizing email in Outlook.com
11,898 questions
asked
2026-11-13T02:05:17.6466667+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(243.2, 18%, 33%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ETP%3C/text%3E%3C/svg%3E)
Tom Porier
0
Reputation points
answered
2026-11-13T02:37:27.6433333+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(96, 70%, 19%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EE%3C/text%3E%3C/svg%3E)
Estrella721
48,020
Reputation points
Independent Advisor