# Mathematica does not display/evaluate output?

**URL:** <https://community.wolfram.com/t/mathematica-does-not-display-evaluate-output/15158>\
**Category:** Questions\
**Tags:** mathematica, interface-construction, ui-ux-and-ide\
**Created:** [December 27, 2019, 12:08am UTC](https://community.wolfram.com/t/mathematica-does-not-display-evaluate-output/15158 "2019-12-27T00:08:15Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![michelecastellana](https://avatars.discourse-cdn.com/v4/letter/m/eb9ed0/32.png) [@michelecastellana](https://community.wolfram.com/u/michelecastellana)\
**Post date:** [December 27, 2019, 12:08am UTC](https://community.wolfram.com/t/mathematica-does-not-display-evaluate-output/15158/1 "2019-12-27T00:08:15Z")

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Dear all,  
I recently re-installed Mathematica 10.3.1.0 on Mac OSx x86. If I type any command and press SHIFT+ENTER, no output is produced, please see the screenshot below. Do you know why this is happening?

Thank you!

 ![ScreenShot2019-12-27at1.06.35AM.png](https://global.discourse-cdn.com/wolfram/original/3X/d/7/d79eec5eb41a61c9960410891b9011a96e504a15.png)

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**Author:** ![kmartin](https://yyz1.discourse-cdn.com/wolfram/user_avatar/community.wolfram.com/kmartin/32/38196_2.png) [@kmartin](https://community.wolfram.com/u/kmartin)\
**Post date:** [December 27, 2019, 3:39pm UTC](https://community.wolfram.com/t/mathematica-does-not-display-evaluate-output/15158/2 "2019-12-27T15:39:22Z")

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Perhaps this is trivial, but I want to be sure: It is essential that your cursor be _within_ the cell when you hit SHIFT+ENTER. In your screenshot, you have the line below the cell, and if you hit SHIFT+ENTER in this scenario, nothing will happen.

If you arrow key up into the cell, does SHIFT+ENTER still fail?

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**Author:** ![abhinavpb249](https://avatars.discourse-cdn.com/v4/letter/a/8edcca/32.png) [@abhinavpb249](https://community.wolfram.com/u/abhinavpb249)\
**Post date:** [February 24, 2023, 3:39pm UTC](https://community.wolfram.com/t/mathematica-does-not-display-evaluate-output/15158/3 "2023-02-24T15:39:13Z")

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Cursor is inside the cell but still, it is not showing any output. The cursor is blinking horizontally on the line. I am using the web version. I have stable internet connection, everything is loading except this.

 ![Screenshotfrom2023-02-2421-01-59.png](https://global.discourse-cdn.com/wolfram/original/3X/8/1/81df2282dd92806b2a85170fb10accbb4388dc35.png)

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**Author:** ![hansmilton](https://yyz1.discourse-cdn.com/wolfram/user_avatar/community.wolfram.com/hansmilton/32/8656_2.png) [@hansmilton](https://community.wolfram.com/u/hansmilton)\
**Post date:** [February 24, 2023, 5:15pm UTC](https://community.wolfram.com/t/mathematica-does-not-display-evaluate-output/15158/4 "2023-02-24T17:15:06Z")

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If the cursor is blinking horizontally it is **not** in the cell above. It is waiting for new input into the next cell. Click somewhere around `2+3` and hit SHIFT+ENTER

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**Author:** ![abhinavpb249](https://avatars.discourse-cdn.com/v4/letter/a/8edcca/32.png) [@abhinavpb249](https://community.wolfram.com/u/abhinavpb249)\
**Post date:** [February 25, 2023, 5:01am UTC](https://community.wolfram.com/t/mathematica-does-not-display-evaluate-output/15158/5 "2023-02-25T05:01:05Z")

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No, the cursor is horizontal **after** I have clicked Shift+Enter.

Before that, It was inside the cell above just next to `2+3`

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**Author:** ![gianlucagorni](https://avatars.discourse-cdn.com/v4/letter/g/ec9cab/32.png) [@gianlucagorni](https://community.wolfram.com/u/gianlucagorni)\
**Post date:** [February 27, 2023, 4:35pm UTC](https://community.wolfram.com/t/mathematica-does-not-display-evaluate-output/15158/6 "2023-02-27T16:35:28Z")

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What happens with the menu command `Evaluation > Evaluate Notebook`? This should evaluate everything in the notebook file.

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**Author:** ![billcurtis](https://yyz1.discourse-cdn.com/wolfram/user_avatar/community.wolfram.com/billcurtis/32/32147_2.png) [@billcurtis](https://community.wolfram.com/u/billcurtis)\
**Post date:** [January 8, 2024, 5:00pm UTC](https://community.wolfram.com/t/mathematica-does-not-display-evaluate-output/15158/7 "2024-01-08T17:00:22Z")

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Try going to Evaluation → Default Kernel, and select Local.

I had this same problem and was able to correct it in this way.