Extend or Reset Windows Trial Period [Windows 8, 8.1, 7]

If you are using Trial version of any Microsoft Windows 8, 8.1 or 7 and Microsoft allow to use this trial version for 30-90 days depends on Windows version. If Windows trial is going to expire then you can extend or reset Windows trial period from 30 days to 360 for Windows 7 and from Windows 8 or 8.1 you can extend trial from 90 days to 270 days. So, if you are using pirated version of Windows to test it which might be not safe you must install trial Windows and then reset trial to enjoy more trial days.

You can download Windows 8 or 8.1 enterprise trial versions for 90 days, Windows 7 trial ISO files officially and we already posted direct download links in a guide  How to Download Official Windows ISO Free.

How to Reset Windows Trial

Today we will show you a little and very easy trick to extent or reset Windows 7 trial to 360 days and Windows 8, 8.1 to 279 days almost a full year. Sounds great right?


Reset Windows 8 or 8.1 Trial

We need to run few commands in Windows command prompt to extend or reset Windows 8 trial.

Press Win key from keyboard to and type “command Prompt”, Now in search results, right-click on “Command Prompt” and select “Run as administrator” option.


In the Command Prompt window type slmgr -rearm command and hit enter, you will get a notification “Command complete successfully”.

slmgr-rearm-command-windows-8 command-completed-successfully

Close the Command Prompt, Restart your computer and you have successfully extended Windows trial period.

You can repeat these steps 3 times on Windows 8 or 8.1 to get maximum of 270 days trial.

 Reset Windows 7 and Vista Trial

Press Windows key from keyboard and type cmd in the search box then right-click on the “Command Prompt” in the search results and select “Run as administrator” option.


You need to type the following command slmgr -rearm and hit enter, after running this command you will see a message “Command complete successfully”


Now restart your computer. You can use this command 3 times to get 120 days. 30 days of your windows after installation and 90 days after using this trick.

But this is not the end. Here is another trick to get more day s and extend Windows trial to 360 days.

Open Run window, press Win+R keys from keyboard then type regedit and hit enter to open Windows Registry.


Open the following path in Registry editor:

Windows 7: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WindowsNT\CurrentVersion\SoftwareProtectionPlatform
Windows Vista: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WindowsNT\CurrentVersion\SL

Here we need to change a value, right-click on SkipReam and click on modify and change “Value Data” form 0 to 1 and save it.


Now, run slmgr -rearm command in Windows Command Prompt for 8 times. It means you will add 360 days more trial days of Windows 7 or Vista.

Commands to check Windows license information

You can use slmgr command with different switches and get some Windows license information. Use slmgr /dli or to check some more details use slmgr /dlv.To see the Windows expiry date use slmgr /xprcommand

Share your experience when you try to extend Windows trial period.

16 comments… add one
Nona July 16, 2014, 5:37 pm

I did the registry hack a month ago and it worked. I was allowed to run slmgr -rearm but this month when I tried to rearm I got an error. So I did the registry hack again and again ran the rearm command it appeared to work but on reboot I found the registry value back to 0 and I still had only 2 days to activate. Looks like Microsoft blocked the hack. Any find a work a round?

Phantomphish May 20, 2015, 6:01 pm

I just now did it so I don’t think Microsoft blocked or even found it yet

prajwol May 23, 2015, 2:46 pm

Thanku soo much for this

name July 28, 2015, 1:08 am

Doesn’t work. after restart again says me about licence

Ahmed July 31, 2015, 12:53 am

Did you get the Command complete successfully message after running the command?

Shine August 10, 2015, 5:18 pm

I tried to extend my Visio but then it does not work even if I religiously followed the instruction.

Sheep August 2, 2015, 4:12 pm

Actually the Windows 8.1 Enterprise Trial only allows one re-arm, giving another 90 days, so the maximum you can run WIndows 8.1 for without re-installing is 180 days.

AE March 27, 2016, 6:46 pm

Question: does this work even if you’ve exceeded the 30 day trial? I’m guessing the answer is yes?

Situation: I installed Windows 7 on January 23. I used the “slmgr -rearm” command on February 23 to extend the trial 30 more days. However, I forgot to use the command again on March 23, and then didn’t use the PC for a few days. When I booted on March 26 my desktop background color was black, and there was a message in the lower right hand corner saying that this version of Windows 7 wasn’t genuine. I executed the -rearm command again and rebooted, and my desktop went back to what it looked like before, and the message was gone.

Just wondering what your thoughts are on this situation.

Ahmed March 28, 2016, 1:46 pm

It seems you successfully reset trial period, If you are not getting any message at right-bottom corner like “The copy of Windows is not genuine” or a popup message like “Activate Windows now, The activation period has expired…”
If you are thinking about license expired black screen then try to change the desktop background.

Rightminds August 19, 2016, 4:58 pm

Yeah the hack really worked on my windows 8..1enterprise evaluation! It did give me an additional 90 days after running the rearm command but the second attempt gave me an error message that I can only run the command once. Whatever way your information still helps thanks so much.

I wouldn’t mind if you can send some useful DOS commands and their use to my email. Thank in anticipation.

MG October 17, 2016, 3:07 pm

Are there any real way out there that can tell us how to reset 8.1 forever, instead of just for a few months?

Win8 Enterpries Evulation February 2, 2017, 4:39 am

I used slmgr -rearm again and it said you have 90 more days to use this trial but when i restarted my computer its not working my computer close itself every 1 hours

TrickyWays February 2, 2017, 6:42 pm

What you mean close itself? If you mean shutdown then Windows only disable some feature after trial period passed not shutdown the computer.

Delacabra June 1, 2017, 6:10 pm

I had the black screen and message in bottom right of my win 7 ultimate last year and actually activated it somehow and okay again. Then, like 3 months later screen went black but no message in bottom right. It said it was still activated but i had to rearm every month for 3 months anyway. Itried to rearm today and it said out of rearms. Will try regedit trick, but it says it is activated so wtf?

Mike May 29, 2018, 6:11 pm

If the screen is black but no popup then you can just change the background and that’s it! Works like new!

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