diff --git a/src/vs/platform/userDataSync/common/globalStateSync.ts b/src/vs/platform/userDataSync/common/globalStateSync.ts
index 849bcf34e57..1bf6eafc6ad 100644
--- a/src/vs/platform/userDataSync/common/globalStateSync.ts
+++ b/src/vs/platform/userDataSync/common/globalStateSync.ts
@@ -6,6 +6,7 @@
 import { VSBuffer } from 'vs/base/common/buffer';
 import { CancellationToken } from 'vs/base/common/cancellation';
 import { IStringDictionary } from 'vs/base/common/collections';
+import { getErrorMessage } from 'vs/base/common/errors';
 import { Event } from 'vs/base/common/event';
 import { parse } from 'vs/base/common/json';
 import { applyEdits } from 'vs/base/common/jsonEdit';
@@ -272,6 +273,7 @@ export class GlobalStateSynchroniser extends AbstractSynchroniser implements IUs
 	}
 
 	private async getLocalGlobalState(): Promise<IGlobalState> {
+		this.logService.trace('GlobalStateSync#getLocalGlobalState');
 		const storage: IStringDictionary<IStorageValue> = {};
 		const argvContent: string = await this.getLocalArgvContent();
 		const argvValue: IStringDictionary<any> = parse(argvContent);
@@ -291,9 +293,12 @@ export class GlobalStateSynchroniser extends AbstractSynchroniser implements IUs
 
 	private async getLocalArgvContent(): Promise<string> {
 		try {
+			this.logService.trace('GlobalStateSync#getLocalArgvContent', this.environmentService.argvResource);
 			const content = await this.fileService.readFile(this.environmentService.argvResource);
 			return content.value.toString();
-		} catch (error) { }
+		} catch (error) {
+			this.logService.trace(getErrorMessage(error));
+		}
 		return '{}';
 	}