Hello all, we are aware that the original solution may not work for others facing this issue. Please find the complete collection of solutions below:

NOTE: Method 2 involves modifying a value for the setting ‘Allow legacy manifest versions’. If you find that you are not able to locate this setting, please try Method 3.

--------

Method 1 - The Original Solution

Step 1: Navigate to chrome://flags/#extension-manifest-v2-deprecation-warning in the Chrome browser:

Step 2: Disable the following settings:

•  Extension Manifest V2 Deprecation Warning Stage
• Extension Manifest V2 Deprecation Disabled Stage
• Extension Manifest V2 Deprecation Unsupported Stage

Step 3: Restart Chrome.

Step 4: Re-add the Elasticsearch Head Chrome extension. This comment details how to add the extension to Chrome.

--------

Method 2 - 'Allow legacy manifest versions'

Step 1: Navigate to chrome://flags/#extension-manifest-v2-deprecation-warning in the Chrome browser:

Step 2: Type ‘Extension’ in the search bar and scroll to the bottom of the search results until you find the setting ‘Allow legacy extension manifest versions’.

Step 3: Click the dropdown box labelled ‘Default’ and select Enabled, then restart the Chrome browser.

Step 4 (optional): In some cases, you may need to re-add the Elasticsearch Head Chrome extension. This comment details how to add the extension to Chrome.

--------

Method 3 - If 'Allow Legacy Manifest Versions' setting is missing

Many thanks to josephng​ for providing us with this solution!

Step 1: Navigate to chrome://flags/#extension-manifest-v2-deprecation-warning in the Chrome browser:

Step 2: Type ‘M1’ in the search bar - you should be presented with two options:

• ‘Temporarily unexpire M138 flags’
• ‘Temporarily unexpire M139 flags’

Select ‘Enabled’ for both settings, then restart the Chrome browser.

Step 3: Type ‘Extension’ in the search bar and scroll to the bottom of the search results until you find the setting ‘Allow legacy extension manifest versions’.

Step 4 (optional): In some cases, you may need to re-add the Elasticsearch Head Chrome extension. This comment details how to add the extension to Chrome.

--------

I hope this helps!