Plex cannot be enabled and "Operation Failed" is displayed.

[RyanYang]

Operating instruction

Applicable models: All TNAS models
Applicable system: TOS 5/6

Fault phenomenon
If the Plex fails to be enabled for a certain TNAS user after being used for a period of time, the Operation Failed message is displayed. This may indicate that the Plex database is damaged. For details, see the following countermeasures.

Countermeasure
1.Go to TOS App Center > Installed,disable Plex.
2.Go to the TOS desktop, open File Manager, and access Plex > Library > Application Support > Plex Media Server > Plug-in Support >Databases, find the database in use ((the file name extension is db)), rename the database in use and back it up.

plex.png

3. Go to TOS App Center > Installed,restart Plex.
4. If Plex still cannot be enabled, go to TOS Control Panel > Shared folder, change the Plex folder name and enable Plex again.

[Madmart54]

Many thanks! I changed the names of the next level folders of the plex main folder and it enabled

[isinfcca]

This solution did not work for me. I'm using a F2-210 TOS v4.2.31. Any ideas how to fix this on a TOS v4?

[TMzethar]

{L_BUTTON_AT}isinfcca

Here are some relevant discussions and solutions that may be helpful to you. viewtopic.php?f=83&t=364

[anniesteuber]

The version of TOS 4.2.08-2101111540 on f4-210, the version of the application downloaded from your site TNAS Mobile-2.4.5 by link. I bought it yesterday and now I'm setting it up. I can't configure access through the app. Writes " Invalid username or password. Please try again."
Any advice appreciated please.Hello Neighbor

[TMlinda]

{L_BUTTON_AT}anniesteuber

Please check if you have entered an incorrect or non-existent username; If not, it may be due to damage to your database. You can try reinstalling the system.To reinstall the system, refer to this link: viewtopic.php?f=76&t=423

[bacchus]

I am having this problem. i have a brand new terramaster. created accounts it is syncing volumes and i just downloaded the latest plex server but it is not enabling when i install so i cant even access. i have files ready on the server but cant get it enabled to even open plex on terramaster.

[TMzethar]

The Plex app still takes a little while to complete the configuration after installation. And all read/write actions are slow when RAID is synchronized, please be patient.
Did you download your Plex app from the app center?

[bacchus]

i tried downloading from app store then manual. installs ok then gives me option to enable. tries to enable then says operation failed

[TMzethar]

Have you tried point 4 in TMRyan's post?
4. If Plex still cannot be enabled, go to TOS Control Panel > Shared folder, change the Plex folder name and enable Plex again.

If point 4 does not solve the problem, check for a file system error. This may prevent the Plex configuration from being written.
viewtopic.php?t=2575