excel 365 2013 Format cells command not responding

Hi Greg,

Thank you for contacting Microsoft Office Community and We will be glad to assist you with your concern. It looks like there might be a conflict or corrupt installation files.

Let us follow the steps and verify the results.

Method 1:
Try opening Excel in safe mode and check. Follow the steps:
1. Click on Start ->All Programs.
2. Go to Accessories -> Click on RUN.
3. Type Excel /safe (leave a space after Excel) -> Click OK.

If Excel safe works, then follow the steps disable the add-ins:
1. Click on File -> Go to Options.
2. Click on Add-ins -> select an add-in type ->Click Go
3.Uncheck the Add-ins to disable -> Click OK.

Method 2:
If that does not help, then this issue may occur if there are any Excel template present in the Excel Startup folder.

Let’s start with clearing these files. Follow these steps:
C:\Program Files\Microsoft Office\Office15\XLStart
C:\Users\User Name\AppData\Roaming\Microsoft\Excel\XLSTART

Note: Take a backup of files before deleting the files.

Method 3:
If the issue persists, you may repair Office 2013 application and check:
http://office.microsoft.com/en-us/powerpoint-help/repair-office-programs-HA010357402.aspx

I hope the steps provided fixes the issue. If not reply and we will be glad to assist you further.

Thank You

I have had this error and resolved it by doing the following

Removing the default printer from selection and it resolved the issue

I have had this error and resolved it by doing the following

Removing the default printer from selection and it resolved the issue

Yes it appears if you have a network printer as default that is not currently available that it blows up excel when doing formatting... Shame.   Anyway defaulted my adobe acrobat printer and all is good.