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The Community Blog is a personal opinion of community members and by no means the official standpoint of DNN Corp or DNN Platform. This is a place to express personal thoughts about DNNPlatform, the community and its ecosystem. Do you have useful information that you would like to share with the DNN Community in a featured article or blog? If so, please contact .

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A quick workaround for a caching issue in DNN 5.2.0

 A caching issue in DNN 5.2.0 leads into special characters like German umlauts, accents etc. being replaced by "?". 

Users, who are familiar with Visual Studio may download latest source code from and compile for themselves, all others may work around by setting cache duration to 0 in module settings - if they can afford the associated performance decrease.

To speed up this process, I created a SQL Script as a temporary workaround to adjust caching and back.

To enable/disable caching for all module, go to SQL in Host Settings, paste the script into the textbox, check "run as Script" and hit "execute".


To disable caching, use:

INSERT INTO {databaseOwner}{objectQualifier}TabModuleSettings
 SELECT TabModuleID, N'SavedCacheTime', CacheTime, 2, GETDATE(), 2, GETDATE()
   FROM {databaseOwner}{objectQualifier}TabModules T
   WHERE CacheTime > 0
UPDATE {databaseOwner}{objectQualifier}TabModules SET CacheTime = 0 WHERE CacheTime <> 0

to re-enable caching, execute

 SET M.CacheTime = S.SettingValue 
FROM {databaseOwner}{objectQualifier}TabModules M INNER JOIN {databaseOwner}{objectQualifier}TabModuleSettings S on M.TabModuleID = S.TabModuleID
WHERE S.SettingName = N'SavedCacheTime' DELETE FROM {databaseOwner}{objectQualifier}TabModuleSettings WHERE SettingName = N'SavedCacheTime'



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