ArcMap Common Problems and Solutions
Solutions to some common problems that users run into when using ArcMap on MCECS supported machines are described below.
Error: Unable to execute the selected tool. You do not have the necessary license to execute the selected tool.
![Tool not licenced error window](https://cat.pdx.edu/wp-content/uploads/2017/09/arcmap-1.jpg)
If you see this error, do the following:
In ArcMap, open the “Customize” menu, and then select “Extensions”. Select “Spatial Analyst” and then close the window.
![Extensions customization window](https://cat.pdx.edu/wp-content/uploads/2017/09/arcmap-2.jpg)
Error: An error has occurred in the script on this page.
![Script error message window](https://cat.pdx.edu/wp-content/uploads/2017/09/arcmap-3.jpg)
If you see this error, do the following:
Open up Internet Explorer, then click on the cog in the top right of the window to open up the options menu. From there, select “Internet options”.
![Internet explorer internet options window](https://cat.pdx.edu/wp-content/uploads/2017/09/arcmap-4.jpg)
Select the Security tab. Click on the green check mark icon that says “Trusted Sites”. Then click on the “Sites” button. A popup will open.
![Internet options security tab window](https://cat.pdx.edu/wp-content/uploads/2019/09/thoth.png)
Uncheck the ‘Require server verification…’ checkbox if it is checked, then add the following website: file://thoth