If you have installed Microsoft Office 2010 or Microsoft Office 2013 and haven’t yet activated it, you will be glad to know that Microsoft allows users to extend the trial for 180 days. You can download Office 2010 or Office 2013 with 60 days trial (See the related links displayed in this article) edition. Normally, after 30 days of free trial, you have to activate Microsoft Office with a product key to continue using it. But, do you know that Microsoft allows you to extend Office trial period for another 30 days, and not just once but five times? You can rearm and use Microsoft Office 2010 and extend the trial for up to 6 months or 180 days. You just need to just use “Office rearm activation” process. Something similar to Microsoft Windows 7 rearm that lets you use the operating system for up to 120 days more. After this grace period, Office 2010 will automatically start functioning in reduced functionality mode. This will remind the user that the software needs to be activated.

Why Microsoft Office rearm activation even exists? A little background about it

Microsoft requires all installed copy of Office to be activated, including licenses sold through volume licensing. The Office rearm function is there to actually to help the corporate customers. Microsoft allows customers to extend the activation deadline for five times, thus giving 30 days extra after each rearm. If Office rearm is timed correctly at the last day of current 30 day cycle’s end, theoretically, the five Office rearm activation can extend the free usage of Office 2010 up to 6 months or 180 days.


Office Trial Extender: Easily Rearm Office 2010, Office 2013 And Extend Evaluation From 30 Days To 180 Days

Another easy and simple method to rearm Office 2010 or Office 2013 is to use Office Trial Extender. This little freeware does the same above method automatically . will help you extend Microsoft Office trial period for another 30 days. Thus, if you rearm Office on the last day before it has to be activated that makes a total evaluation time of 6 x 30 = 180 days.to 180 days. It will take the pain down of doing the manual work (as shown above). It can be used to execute the rearm command by simply clicking on a single button “Rearm“.

office 2010 trial reset

This is much faster and offers less hassle for novice users. It requires the Microsoft .net Framework 3.5 for running and can be easily downloaded directly from the developer’s website.

Extend Microsoft Office 2010 Trial Up To 180 Days Without Activating?

  • To rearm Office 2010 and get another 30 days of free usage, simply, run the OSPPREARM.EXE command file at the following folder:
    %Program Files%\Common Files\Microsoft Shared\OfficeSoftwareProtectionPlatform\
  • You can open a command prompt window (Windows 7 or Vista users should open an elevated command prompt window), and type the following command:
    C:\Program Files\Common Files\Microsoft Shared\OfficeSoftwareProtectionPlatform\OSPPREARM.EXE
  • If you are using 64-bit Windows OS and have installed 32-bit Office 2010, then you will need to run the following command in command prompt:
    C:\Program Files (x86)\Common Files\Microsoft Shared\OfficeSoftwareProtectionPlatform\OSPPREARM.EXE
  • And the path of the file is located at:
    %ProgramFiles(x86)%\Common Files\Microsoft Shared\OfficeSoftwareProtectionPlatform\

SK Mezanul Haque is the founder of MyTechGuide.org (popularly known as My Technology Guide). Passionate about all things in tech. Let's meet: Google Plus.


  1. Ronald Yeboah Reply

    So after the 5 rearms you will have to buy it or install office again?

  2. I have downloaded the ms office professional from mytechguide site but how to activate and get the activation key for this trial version

  3. Downloaded the free trial and they didnt give me a product key where can i get it

    • U can go to my account tab on the website and there would be your order history and u can get ur key

  4. Question on MS Office Activation.
    I’m currently using an unregistered copy of MS Office Professional Plus 2010 – but the trial period is running out. I’m going to buy the Home and Business version (b/c I don’t need all the functionality of the Prof. Plus). Does anyone know if just buy the product keycard and register the INCLUDED programs (Outlook, Word, Excel – i.e. – the ones that come with the Home & Business version) – or will the MS registration system reject the registration (because it’s seeing the Professional Plus suite) – and force you to do a full de-install and re-install?

    Second question – if you must do a full re-install to activate – is there a way to keep your Outlook email folders, calendar settings/appts, etc. …. or will the deinstall/reinstall wipe them out?

    Thanks for any help.

  5. Hi installed ms 2010 academic trail 180 days from a cd. It expired 2 days ago any ay of using the same cd again on the same laptop? And if I download the 30 trail will it allow me to use the 30 day seeing that I already used a trail version on a cd? Any way to get 180 day so I can do my college course.

  6. hello, that path you say does not work. where do I put all that info? thanks

      • Thanks. “Where” do I put the ospprearm.exe? Doesn’t it have to have 8 letters total?

        • Which edition of Office do you have? I guess its 32-bit as that is the most common. Try

          C:\Program Files (x86)\Common Files\Microsoft Shared\OfficeSoftwareProtectionPlatform\OSPPREARM.EXE

          in an elevated command prompt.

          • And yes keep it in quotes:

            “C:\Program Files (x86)\Common Files\Microsoft Shared\OfficeSoftwareProtectionPlatform\OSPPREARM.EXE”

          • Thanks but it doesn’t work. It takes me to a landing page of lots of menus.

            Jerry Dragoon, GRI, Broker Select Properties

          • The edition of office I got is what it came with the computer. Office 365/office 2013

            Jerry Dragoon, GRI, Broker Select Properties

          • Try the Office Trial Extender app. Download it from here. It supports Office 2013 but I doubt anything discussed here will work if you have Office365.

          • The latest version of Office Trial Extender comes with bundled OpenCandy adware. While installing the program, please choose custom installation (advanced) and don’t select any of the program it offers you to install like REACHit, Pluto.tv, etc. Here’s the VirusTotal analysis page.

          • Thanks. I’m not that savvy like you. All I wanted is the way to extend Microsoft 2013 or office for more time. It seems that we’ve taken another path that I don’t understand. Sorry.

            Jerry Dragoon, GRI, Broker Select Properties

          • I am sorry Jerry if I sounded too technical. I will try to get back to you soon hopefully with a solution. But if you have Office365 then I don’t think this tips will be of any use for you. :(

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