As it turns out, there are several different causes that might end up triggering this particular error code:
Method 1: Performing a Database Optimization
As it turns out, the apparition of this particular error is a telltale sign that your database is in need of optimization. Several affected users have confirmed that they managed to fix this particular issue by optimizing the database that you’re currently encountering the ‘There Was an Unexpected Error Loading this Library‘ error. If this scenario is applicable, follow the instructions below to start the process of optimizing a database in Plex Media Player: In case the same problem is still occurring, move down to the next potential fix below.
Method 2: Refreshing all Metadata
Some users that were previously encountered this particular error have successfully managed to fix the problem by refreshing all the relevant metadata associated with your Plex.TV server. This particular fix has been confirmed to work by a lot of affected users. If you want to deploy this fix on the affected section, follow the instructions below to refresh the relevant metadata: In case you are still encountering the same There Was an Unexpected Error Loading this Library error, move down to the next potential fix below.
Method 3: Running Plex Server with Admin Access
As it turns out, this problem can also occur in instances where the Plex server infrastructure that you installed locally doesn’t have enough permissions to run properly on your machine. This problem is typically reported to occur in instances where there are strict UAC (User Account Control) rules. If this scenario is applicable, you should be able to fix the problem by running the main Plex executable with admin privileges before relying on the action that was previously causing the error. To open the Plex executable with admin access, start by navigating to the location. Unless you installed the Plex infrastructure on a custom location, you will be able to find it here: Once you arrive at the correct location, right-click on the Plex Media Server.exe and thence click on Run as Administrator from the newly appeared context menu. After you’ve ensured that you have opened the Plex server with admin privileges, repeat the action that was previously causing the “There was an unexpected error loading this library” issue and see if the problem has been resolved. In case the problem is still occurring, move down to the next potential fix below.
Method 4: Disabling Adblock Plus/ uBlock (if applicable)
If you currently have Adblock Plus or uBlocks plug-ins installed on your browser (Chrome or Firefox), it’s possible that it might conflict with the Plex server that you are hosting locally. If your situation is similar, you will be able to resolve the issue by disabling the plugin while utilizing the Plex services. Several affected users have confirmed that the “There was an unexpected error loading this library” error has stopped occurring once the Adblock plus or uBlock plugin was disabled. To disable the Adblock extension on Chrome, type ‘chrome://extensions/’ inside the navigation bar and press Enter to open the Extensions tab. Once inside, scroll down through the list of installed extensions and disable the toggle associated with the AdBlock or uBlock extensions. Note: On Firefox, type ‘about:addons‘ inside the navigation bar and press Enter to reach the Add-ons screen. Once the Adblock Plus extension has been uninstalled or disabled, repeat the action that was previously causing the There was an unexpected error loading this item error to see if the problem is now resolved. In case the same problem is still occurring, move down to the next potential fix below.
Method 5: Repairing the Corrupt Database
If none of the potential fixes above have worked for you, chances are you are dealing with some type of file corruption in your Plex server database. If this scenario is applicable, you should be able to fix the problem by using an elevated Command Prompt to run a series of commands capable of repairing inconsistencies with your Plex database. Note: Before you initiate this operation, you need to ensure that you have the SQLite3 tools installed on your computer. Without them, the commands below will not work. Once you meet the requirements to start repairing your potentially corrupt Plex database, follow the instructions below:
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