How to resolve Windows update error 0x800F081F

 You can see error 0x800F081F when you add windows feature or windows update.

 Firstly, you need a window media(DVD, USB) for resolving and as a administrator, run cmd.exe.
Execute follwing commander.

dism /online /enable-feature /featurename:netfx3 /all /source:e\sources\sxs /limitaccess

source:e\ is volume drive with windows media

After finishing progress, you can add windows feature and can update windows.

or


Run cmd.exe as a administrator
Input following command

dism.exe /online /cleanup-image /scanhealth

dism.exe /online /cleanup-image /restorehealth

Office 365 Domain setting, which you want to use

 Firstly, move admin page

Domain>add domain

 You can write domain you have

 Microsoft will check your own domain via TXT

In DNS that serve your domain, you have to insert TXT including TXT value.

 A couple of minutes, Office 365's website'll verify your domain successfully.

 Update user

 Finally, You can login office 365's website using your domain.

After login, you can add other DNS records for using Skype for Business and eMail.

You have to put DNS records in your DNS that serve you domain.

Until verifying correctly, wait and check DNS records.

Check your DNS records through Nslookup commander in CMD.

Finish

I am native Korean not English :)

Microsoft Assessment and Planning Toolkit install and use

You can dowonload MAP Toolkit following link

https://www.microsoft.com/en-us/download/details.aspx?id=7826

By MAP Toolkit, you can assess your current IT infrastructure for migrating new version or solutions.

This tool provides a powerful inventory, assessment and reporting tool to simplify the migration planning process

Supported Operating System
Windows 7 Service Pack 1, Windows 8, Windows 8.1, Windows Server 2008 R2 SP1, Windows Server 2012, Windows Server 2012 R2

Firstly, you have to create database for inventory database. If you have existing database, you can choose "Use an existing database"

You have to put credential account in. You dont need administrator

Check OU or domain to assess

 After a couple of minutes, you can see finished Data Collection

Click Option part and can make Report.

How to back-up a Office 365 SharePoint Online site and data

If you are considering moving you data and documents to Office 365, you might wonder how you can perform the reverse operation - move data from Microsoft Online Services to file shares or to a local computer (called off-boarding). In this version of Microsoft Online Services, this is a manual process using the “Connect & Export” section of the Ribbon in SharePoint Online. This section is contextual and will be slightly different depending if you are in a Document Library:

or in a List:

or in a Calendar, Contact list a.s.o

So - which commands to use when? Below you’ll find a table listing which commands you can use to save a SharePoint document library or list content from a SharePoint Online environment to file shares, or to a local computer.

SharePoint Online Element	Backup Using	Ribbon Command
Calendars	Outlook	Connect to Outlook
Contacts	Outlook	Connect to Outlook
Discussion Lists	Outlook	Connect to Outlook
Document Libraries	Outlook	Connect to Outlook
Document Libraries	SharePoint Workspace	Sync to SharePoint Workspace
Document Libraries	Windows Explorer	Open with Explorer
List Content	Access	Open with Access
List Content	Excel	Export to Spreadsheet
Tasks	Outlook	Connect to Outlook

You need to be owner of the content or administrator to perform the above actions. Furthermore you must be aware of a couple of known limitations when it comes to downloading documents and exporting lists.

Document Libraries

SharePoint document libraries can contain many different types of files and SharePoint maintains information about each file that it stores. Most of this other information is not preserved when files are downloaded. For example, the following information is not preserved when a file is downloaded using Outlook or Explorer:

• Document properties
• File access permissions
• Relative links between files
• Workflow information
• Versioning information
• Templates

Lists

SharePoint list content must be exported to Office Excel or to an Access database. Simple lists can be exported to Excel. However, if the content of a single cell exceeds Excel’s maximum cell size limit (32,767 characters), the information that exceeds that maximum is lost. If your lists contain large cells, you should export to Access.

SharePoint lists are used to host complex data like Wikis and Blogs. These complex data forms consist of several tables. For example, Blog tables are: Categories, Posts, Comments, Links, and Other Blogs. For the best results, export Wikis and Blogs to Access. When exported to Access, each of these tables is exported correctly, but all properties, permissions, and relationships between tables and contents are lost.

Sites

You can save your SharePoint Online site (including lists, views, workflows, logos, and other elements) as a template. You can also choose to include the contents of the site in the template.

By using this method, the template you create will contain the same files (for instance, the same .PDFs, .docx, and .xlsx files) as were on the site from which the template was made, up to a limit of 50 MB.

Attempt to create a template of a site and include greater than 50 MB of content will result in an error message stating “Error creating solution. The maximum total file size limit (52428800 bytes) has been exceeded.”

See the article "Save a SharePoint Online site as a template" - link for details.

See also

• Migrating Content Between SharePoint Online Site Collections - link
• Information about manual migration of Sharepoint Online content in Office 365 - link (last updated Nov 17 2012)

<source>http://blogs.technet.com/b/lystavlen/archive/2011/10/10/how-to-back-up-office-365-sharepoint-online-data.aspx

Office 365 Trial register

You can register Office 365 Trial following link.
https://products.office.com/en-us/business/compare-office-365-for-business-plans

After a few minutes you can use Office 365.