25

I installed the newest version of Notepad++ on my Win 8.1 Professional. The version is called "Notepad++ Je suis Charlie edition, Build Time Jan 10 2015 - 17:20:21". The Plugin Manager delivered with that version of Notepad++ is 1.0.8. Now I want to add the "Compare" plugin:

  • I start plugin manager.
  • I wait until the list of available plugins has built up.
  • I check "Compare" and click "Install".
  • "An update is available to plugin Manager. It is strongly recommended..." -> "Yes".
  • "Installation Error: Installation of Plugin Manager failed."
  • "OK", and "Install" again.
  • "An update is available to plugin Manager. It is strongly recommended..." -> "No".
  • "Installation Error: Installation of Compare failed."

What exactly am I doing wrong? How can I debug this problem?

Improve this question
2
  • I just ran into this error, and the fix for me was: update my copy of explorer++ to the latest version.
    – neminem
    Jan 30, 2017 at 19:51
  • Sad that this problem still exists in 2019. None of the solutions solved it for me. I attempted on two different machines. I can only conclude the plugin manager is not useful.
    – Andrew
    Jan 2, 2019 at 20:12

7 Answers 7

Reset to default
23

Error: Installation of plugin failed

The latest version of the plugin manager was 1.4.9 at the time this answer was written(see Notepad++ Plugin Manager)

You can always find the latest release by going to https://github.com/bruderstein/nppPluginManager/releases/.

Try a manual install of the plugin manager:

  1. Close notepad++

  2. Download the latest plugin manager PluginManager_1.4.9_UNI.zip from https://github.com/bruderstein/nppPluginManager/releases/download/v1.4.9/PluginManager_v1.4.9_UNI.zip

  3. Unzip the downloaded file

  4. Copy plugins\PluginManager.dll to your notepad++\plugins directory

  5. Restart notepad++

Improve this answer
8
  • 6
    I guess I found the underlying problem: I needed administrator privileges to copy the dll into the plugins directory. Now the PlugInManager is up-to-date. But even when I run Notepad++ as administrator, plugin installation still fails.
    – Alexander
    Feb 18, 2015 at 12:19
  • Have you tried (re)installing notepad++ as an adminstrator?
    – DavidPostill ♦
    Feb 18, 2015 at 12:23
  • Yes I have. I did so multiple times.
    – Alexander
    Feb 18, 2015 at 12:38
  • This resolved the issue for myself.
    – Unfundednut
    May 11, 2015 at 19:21
  • 2
    Note that this plugin manager is incompatible with the x64 version of N++
    – KERR
    Aug 30, 2017 at 1:20
6

I had this issue and the solution was simple:

  1. Go to Plugin Manager via Plugins -> Plugin Manager -> Show Plugin Manager
  2. Click on the Installed tab
  3. Check Plugin Manager
  4. Reinstall

Notepad++ will auto restart after prompt and the issue will be gone.

enter image description here

Improve this answer
2
  • I don't know why this worked, but it worked for me, lol
    – KoKo
    Sep 27, 2016 at 2:45
  • 3
    Strange, I don't have Plugin Manager listed on the "installed" tab.
    – KERR
    Aug 28, 2017 at 13:09
5

Control panel -> Internet options -> Advanced Scroll down to Security. Make sure TLS 1.0, TLS 1.1, and TLS 1.2 are all checked.

Good luck!

Improve this answer
1
1

What finally worked for me was to simply copy the ComparePlugin.dll file from another PC where the plugin was installed. The file location is:

C:\Program Files (x86)\Notepad++\plugins\ComparePlugin.dll
Improve this answer
0

I have just had the same problem again (in current version 6.9) and found a workaround:

I just selected the "AutoSave" plugin as well. When I clicked "Install", it failed on AutoSave plugin installation, but Compare, being second, went through smoothly, and Compare plugin is usable now.

So, unless you want to install the first plugin the list, this workaround is worth a try.

Improve this answer
0

I use the operating system win10 and my system type 64x. Anyway I installed to x64 notepadd++ from notepad++ website. But plugin manager has a trouble to install from "ProgramFiles".I removed at and I installed to 32-bit(x86).The trouble gone. My advice is you install notepad++(x86) if your system x64 (64-bit).

Also ////

Included plugins:

  1. NppExport v0.2.8 (32-bit x86 only)
  2. Plugin Manager 1.3.5 (32-bit x86 only)
  3. Converter 4.2
  4. Mime Tool 2.1
Improve this answer
0

Attempting to update the plugin manager, as detailed by other answers, did not resolve the issue for me and the "Installation of Compare failed" persisted.
I was able to manually install the plugin, though.

  • Download the source code from the Github project,
  • use Visual Studio to build the project
  • and copy the compiled artifacts into \Notepad++\plugins folder.
Improve this answer

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .