Microsoft has both 32 Bit and 64 Bit Operating systems and because most computers support 64 Bit, Version 10 of RoomKeyPMS is a 64 Bit Program. If you receive an error message when trying to install Version 10 => please verify your Operating System:
Go to Start Menu Search => Control Panel:
![Untitled - Paint](https://media.screensteps.com/image_assets/assets/003/359/809/original/91671822-12f7-4a42-8bbd-52dc39d5a1fc.png)
Select System:
![Untitled - Paint](https://media.screensteps.com/image_assets/assets/003/359/811/original/94e3e3f3-1009-45aa-a740-8f1b015e72f5.png)
Under the System Type, if you see 32-Bit Operating System, you will need to use a different installer (see below):
![Untitled - Paint](https://media.screensteps.com/image_assets/assets/003/359/813/original/6d2e1d38-835b-4516-b535-03c340642380.png)
Go back to the Version 10 Download Page and use download password: roomkeypms32@________________ insert server name