This is the famous issue of the Photoshop.
Sometimes, Windows Clipboard won’t paste in Photoshop.  

This is solution to solve a problem to paste Printscreen data in Photoshop. Solution 1 and 2 were very easy ;)
And it has not been reported in Adobe forum yet.

solution 1

Don't use Internet Explorer (IE).
You should use Firefox or Google chrome.

Sometimes, IE ignores the request in the clipboard to Photoshop.
Not Windows, not Photoshop, but IE.

solution 2 

If You use IE, Please close IE.

If the Clipboard won’t paste in Photoshop yet,
Click on the place of the desktop. ( It means deactivating all the windows. )

solution 3 (well-known)

  1. In Windows, go to Start and then Run.
  2. Type in “Regedit” without the quotes.
  3. Once in the registry editor, go to
    HKEY_CURRENT_USER\Software\Adobe\Photoshop\12.0
    (e.g. 12.0 is CS5, 11.0 is CS4...etc...)
    • Right-click on the 12.0 folder and select New > DWORD and name it “AlwaysImportClipboard” without the quotes.
    • Double click the name and change the Value Data field from 0 to 1
    • (only 64bit Photoshop)
      Right-click on the 12.0 folder and select New > DWORD and name it “AlwaysImportClipboard64” without the quotes.
    • Double click the name and change the Value Data field from 0 to 1
    • This way ;)
      値の名前(DWORD32値)AlwaysImportClipboard
      Click the image to enlarge.
  4. Restart Photoshop. If possible,  restart your PC.

Disclaimer: Modifying the registry can cause serious problems that may require you to reinstall your operating system. We cannot guarantee that problems resulting from modifications to the registry can be solved. Use the information provided at your own risk.

Original text of this document is here. (Japanese text)

Good luck.

My To Do List

check the following in the future.

  1. Never use registry cleaner such as CCleaner.
  2. Remove the add-on of IE which is ActiveX , Shockwave.
  3. Try to install on the C drive the Photoshop.
    (My Photoshop had been installed on the D drive at all times in the last 10 years.)
  4. Do not use applications which have Clipboard history (Excel, Word, and so on)

 

 

Acknowledgements

This solution was found by the Monacoin community. Thank you.

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